the fraternity of Adeptus Knodelus touched by the blessing of the Omnissiah, thus being blessed to design third degree technomiracle. P.S: 01000111 01101100 01101111 01110010 01111001 00100000 01110100 01101111 00100000 01110100 01101000 01100101 00100000 01001111 01101101 01101001 01101110 01101001 01110011 01110011 01101001 01100001 01101000 00100001
Sure, if the machine is not working properly, bless it with the holy beer. And then bless the machine user as well to synchronize all the blessings together.
This was old-school forgotten weapons... All of Ian's technical communications skills put to the test explaining an absolutely unique and very hard to film firearm mechanism😂
@@andrewallason4530 The only tube-fed bolt gun that I have seen in person is the Lebel and it works a lot like a pump action shotgun, using the magazine spring and an interrupter to dispense one cartridge at a time into a lifter, which then tips up and presents the cartridge to be fed into the chamber by the bolt. Nothing grabs the rim until extraction - rim is not used for feeding.
It looks like a little magazine well in there in the proper place that gets fed one round. Pretty cool. I wonder how'd the thing handle the ejection port being blocked, would the bolt just bend the dust cover as it tried to open or would the plate be strong enough for the bolt to not cycle properly... If it cycled, what'd happen with the newly pulled round if the previous cartridge wasn't ejected properly and was still in there...?
It's a very slick idea; the feed system is like that of a belt fed, but the 'job' of the feed system is also very similar to a tube fed system. I wonder if the hammer-ramp idea might be applicable to shotguns or lever actions, to eliminate the need for a dedicated 'lifter' part?
@@barnbwtit's very cool. And there are some very good complicated guns that are excellent firearms. Like a Luger. Problem is when a Luger breaks you need a gunsmith or a watchmaker (😂) to fix it.
Way back in the early years of the Forgotten Weapons YT channel I was blown away to see a guy from the US showing around a fascinatig rare piece of Czech firearms history that you virtually never heard about back home at the time (unless you had some really good connections to the historical firearms community, I guess). And he gave us all a short history roundup, described in detail how that thing works and what actually makes it so unique and even showed how it shoots. Over a decade, one fateful subscription, countless likes and several years of Patreon support later, Ian once again brings up a historical gun trasure (now even right here at the source) and once again does the magic that makes Forgotten Weapons one of the most priceless channels in the history of not just UA-cam, but the whole damn internet. Did ya hear that, YT algorithm?!
@@martinpojer5375 There's a bit of a difference between what I wrote and your take on what I meant. ;) But anyway, the short answer: FW > Videos > Oldest ... The longer answer: To me those were gems like ZH-29, ZK-420S, or ZK-383 - to name just a few that had the most notable coverage by Ian. Not to speak of numerous other cool pieces, Ian now even has a pretty long playlist on Czech firearms, absolutely worth watching. These guns and their history is being covered pretty close to never in any of our media that aren't focused on weapons and the military in the first place. Lots of people have at least passing knowledge of stuff like vz.58, CZ-75, Škorpion, or the actual BREN, but most people I know have no clue about the things you can find here in this much detail.
It can be the finest informational channel there is, setting industry standards, reaching record breaking numbers of views, and YT algorithm will still discriminate because it doesn't fit Google's socio-corporate agenda.
@@F4nTom_II understood, I was just curious, it might be weird for me, since I am from Czech Republic, since young age I was exposed to czech weapons/wepaons in general and on top of that I work at the VHU, I was behind the scenes when Ian was asking our curator about the guns he was filming. So it is just that your comment htrown me off, sorry 😅
It really looks like a gun a non-gun person would model for a game, only to receive lots of comments on how it is unrealistic due to misaligned features.
It was featured in a video game called "Marauders," alongside other historical (and more common) firearms. When I first played it my thoughts were exactly what you described--that it was a poor reimagining if an AK by someone who has no clue how firearms work. Little did I know...
Ian, that Czech pertinax is similar to GE textolite. It's also a polymer composite with cotton fibers for extra strength. What's no nice about it is that it's fully machinable and you can drill and tap it. So It makes excellent grips, stocks and other non-stressed gun parts. I was a GE tool & diemaker for 26 yrs.
I've seen it used with denim and resin as knife and glasses furniture, too. I think the general form for the cloth/resin composite is micarta? It's good stuff for grips.
The fourth firearm that does the backwards feeding is the TKB-022PM designed by Korobov in Tula. Not so long ago Max Popenker shared a 3D render of it, and the makers of the World of Guns software recreated it complete function in their game.
Oh f**king thank god. At first I was like "please be called that because its designer was named Krása or something, we couldn't have named this abomination "Beauty".
Odd. "Samopal" normaly means an improvised firearm crudely made by criminals of regular goods from a hardware store. Another meaning is something counterfeit.
Impressive design, but even more impressive is your reputation, as they give you access to a 1-of-1 example to show case and disassemble. Very cool, thank you for all you do.
They only made two!??!! Well, they did a good job, it looks expensive. I always wonder if Ian gets to look at a manual for something like this, or has he done it so much that he can just pick up anything and take it apart and explain it. It was funny about the serial number, I'm always impressed when I find something that has a serial number like 0002! Maybe that's just me. This is a good episode, I like everything about it!
@leonardpearlman4017 I don't know for sure, but I suspect there is an expert from the museum there in the room with him to coach him through dis and re-assembly. Ian has a really good mechanical aptitude, but I really doubt there is any sort of manual for these one-off prototypes.
It is pronounced as [kra:sa]. Long A, accent on R. It means "beauty". Happy to see you review another piece of history of my country. Always something to learn on your channel :)
Micarta is a common name for textile-resin composites. Popular for knife furniture because it is easily made with basic tools, workable with woodworking tools as well as abrasives, tough and waterproof, and can be produced with decorative layer patterns.
@@weronikazalewska2098polymer injection molding is probably just easier to produce. Id imagine the fabrics have to be laid into place then polymerized. However that material is really cool
+1 for the Military History Institute in Prague. I spent a whole day there and it was amazing. The presentation is world class. They use the artifacts, the exhibit designs, and background music to tell the story of around the artifacts. Also bring some cash for the gift shop. The last exhibit is about the modern Czech military and I had a raging NATO B-1R and bought a bunch of patches for my homies.
The sa81 KRASA is a magnificently exquisite experimental gun to look at, it looks like a bolter of the Space Marines of Warhammer 40k. A pity the project never reached mass-production because that would have enjoyed a massive popularity among gun collectors.
@@thenarrativeandwhyyouloveit The front looks like it'd be both a noise & flash suppressor on its own and the first expansion chamber in (the rest of) a suppressor screwed onto it.
It is good to realize that this weapon was made by someone using classic machines, actually by hand. Ok, this is machine machining, but back then a person had to control everything manually, mechanically, at a milling machine or a lathe, he had to think it up and paint it on paper, material , which did not have today's quality, to oversize to make it safe, today it is easy, everything is calculated by the program, everything is machined by CNC, the design was primarily based on function. I know it, I'm a rifleman, I don't live in Prague, but I'm Czech, the funny thing is that a lot of weapon innovations of the 20th century come from us, today a lot of people highlight the Russian AK 47, yes it was invented by a Russian, but the manufacturing process was given to them by our arms industry, they themselves were short on him.
Ian, I don't believe that there is a single video that you have made that I did not find interesting and entertaining (thank you for that!) But this one certainly wins the cake! I'm blown away that this concept never gained traction, thank you for presenting it so well! I almost feel like I shouldn't like it, but I do, a lot. This backward feeding and that lock‐up system can make lots of PDW type guns shorter. I'd really like to see this idea picked up with the current drive for compact PDW weapons
As long as it doesn't pull ammo apart. Everyone is stoked about making new mags. Combining that with a bullpup design would be interesting. Malfunctions and getting brass out will be fun too.
That's one of the more intricate yet well-designed and built prototypes that must exist. The amount of effort put into this, surely the design would have changed significantly were it to be made practical for mass production, but damn.. what a work of art.
I visited the VHU museum after Ian's quick tour video and I can really recommend it to any gun/war nerd. I think about 3 hours is a sensible time to have a look at everything in a decent pace. I myself arrived about hour and a half before the closing hours and had to rush quite a bit.
Happy Thanksgiving from Canada and all Canadian Forgotten Weapons fans. This is one of the coolest, most interesting guns and feed mechanisms I've seen here. I thoroughly enjoyed the look at the internals. I really enjoyed the history, how the chamber development for the 5.45 commenced, I googled Pertinax and it's an interesting material, it's neat that the gas system runs through the foregrip. Pertinax also reminds me of Duraplast.
Luck is very cool thing. One question tho, do you have any previous military experience? Its very different from what you can see in movies. You wont make "Universal Soldier" in few months of training, you make "Kanonenfutter". Ever wondered why conscripts are usualy not very effective? Low morale, low survavibility tasks where you do what other units are "too valuable" to do. If this is real and not just some posture to get likes, i wish you good commanders - those will have bigger effect on you than luck.
Its amazing how small they got this. Thank you so much to MHI and forgotten weapons for making the life and mechanisms of this device known in video format.
The reason for the front vent on the gas block is that the system is so much closer to the chamber due to the barrel being so short. So higher pressure at the point of the gas vent.
I adore the Boberg system, it's my favourite example to bring up when a friend asks an opinion on a unrealistic videogame gun with unconventional features, this video was a real treat, what a goofy and fantastic design, prime Czech engineering
Pertinax was also a Roman emperor. He was a career military man who was sick of the Praetorian Guard abusing their position, so he cracked down on corruption, gambling, drinking, and robbery among the ranks. They stabbed him to death in the imperial office and put the throne up for auction. Julianus was eating dinner when he heard the news, bought the throne, and lasted two months before he was also murdered and replaced.
This rifle is the reason this channel exist. Also this lends itself very much to a braced pistol configuration here in the states. Someone should make it...
This thing is awesome! Suprisingly high quality looking and with some decent quality of life features for such an early and untested prototype. The spring hold open on the top cover plus the automatic dust cover, nice looking sight adjustments, a nice compact stock. Really incredible. I always love efforts directed towards compactness in firearms, it brings out such interesting and clever design choices.
That mechanism, the tooling involved, and the end result are so far up my alley it's knocking on my door. I absolutely love this thing and I'd never heard of it before. What a find.
Idk if a rifle caliber flashbang dispenser is the best possible bedside gun... Firing rifle rounds through the walls of my house while deaf and blind seems like a bad plan. At least the home invader would be deaf and blind too😂
@@kschleic9053 Put a can on it. I have a ultra light 7.5 inch KP-15 in 300 blk and it handles beautifully with a can-but it's a little clumsy for storage. This solves that. As for walls, once you're out of apartments that concern is less of an issue.
11:35 material like that (textile soaked in resin and then put under high temperature and pressure) is usually called micarta in the West. It's commonly used in stuff like knife handles.
This, by the way, is the way I think designers should aim to do dust covers - have them default to closed, and have the system mechanically open them *only* while the bolt is cycling. That way, you don't have to rely on PVT Snuffy remembering to seal his gun to protect the guts from crud.
Such a system has more small moving parts which, if jammed by anything (say, dirt and crud), make the fun nonfunctional. Also, more expensive. Might be necessary when working with private conscriptovich, but having a simpler, more reliable gun seems better, if your guys actually know what they're doing
@@peka2478 All those small parts matter if you expect to shoot the gun a lot, not when you expect it to spend its life stuffed somewhere in a tank and if at all used as a last resort "spray your surroundings with high powered ricocheting pieces of metal right as you're fleeing your burning tank" type of thing. A cover that flies off the first time the gun is used would likely work almost as well.
@@peka2478 Any gun that has a cover which opens when the gun is fired but doesn't close after the gun is done firing is already 90% of the way to a solution with an automatically closing dust cover (such as the M16, M4, etc family of AR-15 derived firearms). All that is needed to make the dust cover close automatically is a relatively weak spring to push it closed again. That's it, it's that simple. I don't know where this concern about "small moving parts that will jam the gun if blocked by dirt and dust" comes from, because the very act of firing the gun will cause some degree of gas to enter the breech, and besides that, there's a lot of big bulky fast moving parts, including the cartridge cases constantly coming out of the ejection port, which will create an environment that is highly likely to KEEP dirt and crud out at least long enough for the spring-loaded dust cover to close the port. Or you know, just do the simple thing, attach the dust cover to the bolt's reciprocating parts, that way the only time the port is open is when a case is exiting. If weakly connected, such as with a spring weaker than the recoil spring, the now reciprocating dust cover will simply not be capable of preventing the bolt from going into battery and firing another cartridge, in the unlikely event that the dust cover DOES get jammed.
Technically something like this could work. There are several different kinds of feed mechanisms that push cartridges backwards instead of forwards. The SAE81 KRASA is one of them
I was thinking something similar. Ther is an ar-15 lower receiver replacement that accepts quad stacked magazines, making each magazine significantly thicker but holds around 40 rounds. There is also an ar-10 model that is chambered in 308. I wonder if this Czech gun can be designed to be both chambered in 308 and have a quad stacked magazine!
It is impossible to use AK-like magazine release with this feeding system: first, there is no room for magazine release in this tiny gun, and second, AK-style rock-n-lock style magazine will not have sufficient precision for reliable feeding. Malfunctions due to claw misalignment would be extremely hard to clear, this feeding system has no easy access like GPMGs have.
@@vos2693 Tell the Swiss their STGW57 rock-n-lock mags don't have precise positioning for feeding, and tell me what happens, lol ;) I honestly wonder if the mag design was done to intentionally differentiate from the VZ58 mags, simply so users wouldn't accidentally load them backwards (er, front-wards). Usually the commblock nations didn't like to change the manual of arms very much, since that meant more training.
Pertinax is actually paper with phenolic resin. Similar verison with textile was called Textit. It was primary material for printed circuit boards and beacuse its easy workability and durability loved by hobbymakers as much as 3D printers now.
I first saw this gun in Marauders - an extraction FPS set in a dieselpunk 1992 space where WW1 never ended. There's lots of historical guns there but I was sure the Krasa was an invention of the developers... Surely that couldn't possibly work... And lo and behold - I was wrong and corrected by Gun Jesus no less.
That operating system reminds me very much of the STG-44, and the magazine feed system looks like it could easily be converted into a belt-feed system. An interesting weapon to be sure.
@@DOMINIK99013 The Czechs really did have everyone beat as far as pre-war LMG technology. The French had stuff that sorta worked but was too reliant on downright ancient design ideas, the Swiss were as always wildly expensive & impractical (and the Germans not much better), America was in the same position as France but our ancient Browning-derived designs were abnormally fantastic, the Russians as always had the beginnings of some good designs that they couldn't afford to make in quantity or quality. And the Danes, well, nothing more needs to be said besides "Madsen LMG."
@@Natedawgontheright Micarta was a reference to the fiber/fabric and resin furniture on this prototype, known as Micarta in English. As to the animation, that was just a suggestion.
Boy, this really pushes the line between a "bolt" and a falling block. Terminology becomes difficult at this point. Some elements of this definitely remind me of a Madsen too.
Back in 2005 I visited military/firearms fair in Brno and there were exhibit of some small company, showing drawings of a gun with this concept, trying to find potential customers. Because I knew Krasa, I've shortly chatted with a designer and he told me, that their solution is similar, but improved (with better feeding claws). Unfortunatelly it was just a concept, no prototype phase. I still have a photo of their drawing somevhere in archive.
The backwards feeding system is very interesting indeed, but far from unique, the 1917, 1919,M2 etc. all do this, and there are millions of those guns made. Admittedly they're belt fed, but basically the same mechanism. I'd argue the one on the Browning MGs is even cooler since the feed claws pivot an an arm.
Thats not terrible velocity for a 5 incher. add a suppressor just for the flash and your good. Big thanks to the museum for letting you play with this 1 of 1 gem
A few Interesting design elements I love the ejection port dust cover and how it's hinged from the top and springs back into place after ejecting the cartridge. As we see from many piston type AR style rifles once the ejection port is open, the contamination problems due to the ingress of mud and other contaminants begins. This leads to malfunctions of the gun because the gas doesn't blow the contaminated materials out of the receiver like a DI gun. I wonder how that spring loaded ejection port cover as shown on the gun in this video would work on an M16 or M4 type rifle or more to the point a piston type AR style rifle? My guess is the ejection port cover would work extremely well to eliminate any ingress of mud or other contaminants especially in a piston style AR rifle such as the HK416 and derivatives. More great content from Ian... 😎🇦🇺👍
Garolite is the closest material to the furniture that is common. Its similar to fiberglass but can use a different textile like cotton or glass mat and cured under pressure.
I cant even imagine how interesting would this things malfunctions be. And another quirk is that with a magazine out of the gun and the bolt being back with a clear chamber your gun can very much not be clear at all.
There's no bolt hold open catch, so unloading procedure would be the same as with normal guns, magazine out, carrier claws have nothing to pull over the hammer, than just rack the bolt to empty the chamber. But it's possible, when bolt is pulled back first and hold there manually... yet, this is wrong and every shooter should be corrected on the spot to not do this.
Ah, the Adeptus Czechanicus, precursors of the Mechanicus of Mars
above all wh40k here this is my favorite
the fraternity of Adeptus Knodelus touched by the blessing of the Omnissiah, thus being blessed to design third degree technomiracle.
P.S: 01000111 01101100 01101111 01110010 01111001 00100000 01110100 01101111 00100000 01110100 01101000 01100101 00100000 01001111 01101101 01101001 01101110 01101001 01110011 01110011 01101001 01100001 01101000 00100001
Sure, if the machine is not working properly, bless it with the holy beer. And then bless the machine user as well to synchronize all the blessings together.
Was like, that's a damn boltgun!
WAAAAGH !
Muzzle Velocity: Maybe
Muzzle Blast: You better believe it
Handheld flashbang
Is 5000 something muzzle velocity low? Genuine question.
@@E2Dima It's half the kinetic energy of an ak47 and twice that of a pistol like the m9.
@@ryanraymond8299 thx :)
@@E2Dima Depends. 5000 of what?
This was old-school forgotten weapons... All of Ian's technical communications skills put to the test explaining an absolutely unique and very hard to film firearm mechanism😂
There's a certain logic to this concept. After all, casings are _already_ designed to extract rearward.
@@oneproudbrowncoat it’s a very similar system to most lever and bolt action rifles with tubular magazines.
This is what I come here for
"I'm sorry we can't get good lighting inside this gun. It's totally teeny weeny."
@@andrewallason4530 The only tube-fed bolt gun that I have seen in person is the Lebel and it works a lot like a pump action shotgun, using the magazine spring and an interrupter to dispense one cartridge at a time into a lifter, which then tips up and presents the cartridge to be fed into the chamber by the bolt. Nothing grabs the rim until extraction - rim is not used for feeding.
Using the hammer as a transitional magazine follower was very innovative.
The story about finding the secret cartridge was really cool also.
It looks like a little magazine well in there in the proper place that gets fed one round. Pretty cool.
I wonder how'd the thing handle the ejection port being blocked, would the bolt just bend the dust cover as it tried to open or would the plate be strong enough for the bolt to not cycle properly... If it cycled, what'd happen with the newly pulled round if the previous cartridge wasn't ejected properly and was still in there...?
It's a very slick idea; the feed system is like that of a belt fed, but the 'job' of the feed system is also very similar to a tube fed system. I wonder if the hammer-ramp idea might be applicable to shotguns or lever actions, to eliminate the need for a dedicated 'lifter' part?
It loads ammo backwards. Gotta be a gun made by a Pollock 🤐
@@barnbwtit's very cool. And there are some very good complicated guns that are excellent firearms. Like a Luger. Problem is when a Luger breaks you need a gunsmith or a watchmaker (😂) to fix it.
Ah. An SKS firing pin. For those that like to take bumpy roads with their rifles!
That thing probably spits absolute fireballs.
Legit flashbang delivery system
Spits one before recoil sends it flying straight up.
Damn thing is the wild magic sorcerer in the D&D party.
"probably"?
Gives the "fully automatic flashbang dispenser" HK 51 a run for it's money....
@12:59 the designers thought of that. Instead of melting someone's eyes out, it only blinds them for a day or two.
Way back in the early years of the Forgotten Weapons YT channel I was blown away to see a guy from the US showing around a fascinatig rare piece of Czech firearms history that you virtually never heard about back home at the time (unless you had some really good connections to the historical firearms community, I guess). And he gave us all a short history roundup, described in detail how that thing works and what actually makes it so unique and even showed how it shoots.
Over a decade, one fateful subscription, countless likes and several years of Patreon support later, Ian once again brings up a historical gun trasure (now even right here at the source) and once again does the magic that makes Forgotten Weapons one of the most priceless channels in the history of not just UA-cam, but the whole damn internet.
Did ya hear that, YT algorithm?!
can you elaborate on that rare piece that virtually nobody heard of ? what piece was it ?
@@martinpojer5375 There's a bit of a difference between what I wrote and your take on what I meant. ;) But anyway, the short answer: FW > Videos > Oldest ...
The longer answer: To me those were gems like ZH-29, ZK-420S, or ZK-383 - to name just a few that had the most notable coverage by Ian. Not to speak of numerous other cool pieces, Ian now even has a pretty long playlist on Czech firearms, absolutely worth watching.
These guns and their history is being covered pretty close to never in any of our media that aren't focused on weapons and the military in the first place. Lots of people have at least passing knowledge of stuff like vz.58, CZ-75, Škorpion, or the actual BREN, but most people I know have no clue about the things you can find here in this much detail.
It can be the finest informational channel there is, setting industry standards, reaching record breaking numbers of views, and YT algorithm will still discriminate because it doesn't fit Google's socio-corporate agenda.
@@F4nTom_II understood, I was just curious, it might be weird for me, since I am from Czech Republic, since young age I was exposed to czech weapons/wepaons in general and on top of that I work at the VHU, I was behind the scenes when Ian was asking our curator about the guns he was filming.
So it is just that your comment htrown me off, sorry 😅
@@F4nTom_II but I agree with you about the channel and its informative value
You can’t fool me, that’s a prototype Space Marine bolter
You can tell because it's an ugly terrible design.
🤣🤣🤣🤣 10 seconds in the clip and thats what i also said.
😂
For the EMPEROR!!!
Came here to say this.
...now to make it .75 cal...
The mechanics of this are genuinely beautiful in the way that they work. It's clever, but not overly complex. What an amazing piece of design.
krása means beauty, so... nailed it😅
It really looks like a gun a non-gun person would model for a game, only to receive lots of comments on how it is unrealistic due to misaligned features.
It was featured in a video game called "Marauders," alongside other historical (and more common) firearms. When I first played it my thoughts were exactly what you described--that it was a poor reimagining if an AK by someone who has no clue how firearms work. Little did I know...
Look at Fallout's 10mm Submachine Gun
I was thinking along similar lines - looks more like a fictional model of a gun, or a model of a fictional gun, than something that’s functional
@@Yfr28yeah I see it I'd it was more square it would basically be the 10mm
Ironicaly still better than every design Bethesda ever had for a gun XD
The Czechs are such innovative gun designers. Love my Czech guns
OK, the G11 was Kraut Space Magic. This is Czech Clockwork Maxim Magic.
Czechnology is already well established teerm;)
@@kibiczbrilliant!
Ian, that Czech pertinax is similar to GE textolite. It's also a polymer composite with cotton fibers for extra strength. What's no nice about it is that it's fully machinable and you can drill and tap it. So It makes excellent grips, stocks and other non-stressed gun parts. I was a GE tool & diemaker for 26 yrs.
I've seen it used with denim and resin as knife and glasses furniture, too. I think the general form for the cloth/resin composite is micarta? It's good stuff for grips.
It looks an awful lot like g10 to me
Micarta is made with epoxid resins textolite with fenolic.
Looks can be decieving
@@georgegordonbrown9522Wasn't the body of the East German Trabant car pressure baked phenol impregnated cotton?
Currently the most Czechnologically advanced WH40K Bolter to date.
I'm glad I'm not the only person to notice.
I wish I Czeched this video out sooner.
The fourth firearm that does the backwards feeding is the TKB-022PM designed by Korobov in Tula. Not so long ago Max Popenker shared a 3D render of it, and the makers of the World of Guns software recreated it complete function in their game.
Ah, the plays with Czech language. "KRAtky SAmopal" = KRASA - meaning SHOrt SUBmachine gun. While the KRASA actually means "prettiness" in Czech.
Oh f**king thank god. At first I was like "please be called that because its designer was named Krása or something, we couldn't have named this abomination "Beauty".
That's actually adorable ngl
A small and cute SMG, got ya!
Odd. "Samopal" normaly means an improvised firearm crudely made by criminals of regular goods from a hardware store. Another meaning is something counterfeit.
@@Def-cd6bmwell, Czech language works unlike russian
Weird, learning about my country's weapon through foreign YT channel. Love it!
Impressive design, but even more impressive is your reputation, as they give you access to a 1-of-1 example to show case and disassemble. Very cool, thank you for all you do.
They only made two!??!! Well, they did a good job, it looks expensive. I always wonder if Ian gets to look at a manual for something like this, or has he done it so much that he can just pick up anything and take it apart and explain it. It was funny about the serial number, I'm always impressed when I find something that has a serial number like 0002! Maybe that's just me. This is a good episode, I like everything about it!
@@leonardpearlman4017 theres also one in 5.45/5.56 I believe called "hrom" but its more unfinished
@leonardpearlman4017 I don't know for sure, but I suspect there is an expert from the museum there in the room with him to coach him through dis and re-assembly. Ian has a really good mechanical aptitude, but I really doubt there is any sort of manual for these one-off prototypes.
They are desining it for military and Ian looks like smarter than average infantry man 😉
i mean, its kinda his thing!
"Micarta" is technically a brand name but is commonly used to describe those fiber-composites
Flashbang dispenser, give it a loudencer
It appears to already have one, check out the diameter of that threaded barrel end
@judgemental9253 they got the requisition right on the money. Bonus flamethrower too
There’s a callback to a video I hadn’t thought about in ages.
Would be cool to suppress if feasible for operation.
Good news we've developped a fully automatic flashbang dispenser.
To dispense them to the ennemy right?
...
To dispense them to the ennemy RIGHT!!!???
11:23 That was (back it up a minute) some of the most *beautiful* engineering I have seen on a firearm!
It is absolutely beautiful
12:10 "It is guided," promptly shows everyone why it was guided, "by the cutouts." Thanks for keeping that take, Ian.
And he cracked himself up in the process! :)) I'm relatively new to firearms and this channel is just pure gold, I can't get enough!
It is pronounced as [kra:sa]. Long A, accent on R. It means "beauty". Happy to see you review another piece of history of my country. Always something to learn on your channel :)
Micarta is a common name for textile-resin composites. Popular for knife furniture because it is easily made with basic tools, workable with woodworking tools as well as abrasives, tough and waterproof, and can be produced with decorative layer patterns.
It's some sort plastiised fabric and has been around for a lon time. Really useful but weird stuff. In surprised it's not used more on guns
@@weronikazalewska2098polymer injection molding is probably just easier to produce. Id imagine the fabrics have to be laid into place then polymerized. However that material is really cool
@@weronikazalewska2098 Well i think the reason is that it is a bit heavy for the strength you get.
Also Micarta typically has some nice texture/grippiness to it over just plastic. I like it for my knives.
The US GI Helmet liners of WW2 were also resin/fabric. Have seen Denim / Resin eyeglasses frames as well.
That is one of the most interesting designs I have seen in a long time. Thanks for the detailed look at a fascinating PDW!
It's like a tiny magazine-fed PKM. It's beautiful.
+1 for the Military History Institute in Prague. I spent a whole day there and it was amazing. The presentation is world class. They use the artifacts, the exhibit designs, and background music to tell the story of around the artifacts. Also bring some cash for the gift shop. The last exhibit is about the modern Czech military and I had a raging NATO B-1R and bought a bunch of patches for my homies.
he did it ... finally
this has to be one of my favorite concepts
Check Lada concept. You will be surprized.
@@askme5805 yeah seen that one before but fsr, that one doesn't spark as much aesthetic joy with me. But I sense a pattern with weird furniture here
The sa81 KRASA is a magnificently exquisite experimental gun to look at, it looks like a bolter of the Space Marines of Warhammer 40k. A pity the project never reached mass-production because that would have enjoyed a massive popularity among gun collectors.
Cz needs to bring this back. This thing is insanely rad
Completely integrally suppressed of course.
@@thenarrativeandwhyyouloveit What, you don't like flashbanging yourself?
@@thenarrativeandwhyyouloveit The front looks like it'd be both a noise & flash suppressor on its own and the first expansion chamber in (the rest of) a suppressor screwed onto it.
I'm curious based on the design, do you have to rack it twice to clear it?
I wonder if this thing would be considered an SBR or a pistol here in the states. I would buy this thing money permitting.
I wish I was a billionaire gunmaker and could just put stuff like this into production just because I could.
What a cool little design!
This is one of the most interesting designs youve shown in quite a while.
It is good to realize that this weapon was made by someone using classic machines, actually by hand. Ok, this is machine machining, but back then a person had to control everything manually, mechanically, at a milling machine or a lathe, he had to think it up and paint it on paper, material , which did not have today's quality, to oversize to make it safe, today it is easy, everything is calculated by the program, everything is machined by CNC, the design was primarily based on function.
I know it, I'm a rifleman, I don't live in Prague, but I'm Czech, the funny thing is that a lot of weapon innovations of the 20th century come from us, today a lot of people highlight the Russian AK 47, yes it was invented by a Russian, but the manufacturing process was given to them by our arms industry, they themselves were short on him.
"Hey bro no flamethrowers in the building"
"It's not it's a PDW"
Ian, I don't believe that there is a single video that you have made that I did not find interesting and entertaining (thank you for that!) But this one certainly wins the cake! I'm blown away that this concept never gained traction, thank you for presenting it so well! I almost feel like I shouldn't like it, but I do, a lot. This backward feeding and that lock‐up system can make lots of PDW type guns shorter. I'd really like to see this idea picked up with the current drive for compact PDW weapons
As long as it doesn't pull ammo apart. Everyone is stoked about making new mags.
Combining that with a bullpup design would be interesting. Malfunctions and getting brass out will be fun too.
Tak to je krása
Podle me nesmysl, ale budiz. Zajimal by me soukromy nazor p.Cermaka.
@@zdenekprisovsky2783 věc může být krásná a zároveň nesmyslná, to se nevylučuje
@@michalberanek2783 Vyborny postreh, holt ceske mysleni 🙂
@@zdenekprisovsky2783 Vzhledem k tomu, že Čermák tu zbraň konstruoval (a pak na jejím základě vyvíjel Sa 83), je tato řečnická otázka bezpředmětná...
Czech designers, amply lubricated by pilsner: "we need to make a skorpion that fires 7.62x39, and we'll give it furniture like a trabant"
😂😂🤣🤣Sounds like from here 😁
And they delivered even if it's just a prototype.😅
I've literally been waiting for someone to show me more of this gun for over a decade. Thank you so much, Ian.
That's one of the more intricate yet well-designed and built prototypes that must exist. The amount of effort put into this, surely the design would have changed significantly were it to be made practical for mass production, but damn.. what a work of art.
Did I get here before the jokes about how loading those mags would be quite natural for an HK owner?
I visited the VHU museum after Ian's quick tour video and I can really recommend it to any gun/war nerd. I think about 3 hours is a sensible time to have a look at everything in a decent pace. I myself arrived about hour and a half before the closing hours and had to rush quite a bit.
One of my most anticipated forgotten weapons episodes !
Anticipated? Did he talk about this beforehand?
Happy Thanksgiving from Canada and all Canadian Forgotten Weapons fans. This is one of the coolest, most interesting guns and feed mechanisms I've seen here. I thoroughly enjoyed the look at the internals.
I really enjoyed the history, how the chamber development for the 5.45 commenced,
I googled Pertinax and it's an interesting material, it's neat that the gas system runs through the foregrip.
Pertinax also reminds me of Duraplast.
Hello from Ukraine. I love your videos Ian.
I’m going to volunteer to the military tomorrow. Wish me luck.
gl
@@johnsmith-jq1uc thanks
Luck is very cool thing. One question tho, do you have any previous military experience? Its very different from what you can see in movies. You wont make "Universal Soldier" in few months of training, you make "Kanonenfutter". Ever wondered why conscripts are usualy not very effective? Low morale, low survavibility tasks where you do what other units are "too valuable" to do. If this is real and not just some posture to get likes, i wish you good commanders - those will have bigger effect on you than luck.
Good luck, и слава Украине!
God bless you, my friend..May St Michael the Archangel guide you sword arm..
I always dig Czech weapons. Well made, typically innovative, and just unique. They also celebrate their military and arms manufacturing past
Its amazing how small they got this.
Thank you so much to MHI and forgotten weapons for making the life and mechanisms of this device known in video format.
The reason for the front vent on the gas block is that the system is so much closer to the chamber due to the barrel being so short. So higher pressure at the point of the gas vent.
That 5.45 cartridge acquisition reminds me of Glock finding a .40 S&W round at SHOT Show.
And in both cases we substitute "sticky fingering" with "finding" because we like that it actually happened.
a live round at shot show!? that's no Bueno
@@andersjjensen 👍
@@Natedawgontheright Good point. The item 'found' enabled Glock to steal S&W's thunder by releasing a .40 pistol first.
FOR THE EMPEROR!
I like these old Czechoslovak fire selectors. "How many holes do you need to drill through? One? None?...or twenty?"
The reminder for training of the selector orientation was "one for yourself, none for the air and thirty (sa58) for the enemy".
@@phh2400 Exactly!
"30 for the enemy, nothing to the ground and one for yourself..."
Czech firearms designers never cease to amaze.
I adore the Boberg system, it's my favourite example to bring up when a friend asks an opinion on a unrealistic videogame gun with unconventional features, this video was a real treat, what a goofy and fantastic design, prime Czech engineering
The PKM is like an upside down AK with a funny feed mechanism, this has the same feed mechanism, but right way up. It's just so cool
holy crap, that thing reminds me of the 10mm SMG from fallout 3 and new vegas !
More like a Warhammer 40K boulter of space marines.
What an incredibly beautiful machine. Thank you.
"Can you make it in 7.62x54r? We need more concussive power"
Make it in 14.5×114 and call it the bolter already
@@Archer89201 I think it would be difficult if the cartridge is the third of the length of the whole gun. 😅
This is a really cool video. Very much appreciated all involved to get this available for viewing.
Pertinax was also a Roman emperor. He was a career military man who was sick of the Praetorian Guard abusing their position, so he cracked down on corruption, gambling, drinking, and robbery among the ranks. They stabbed him to death in the imperial office and put the throne up for auction.
Julianus was eating dinner when he heard the news, bought the throne, and lasted two months before he was also murdered and replaced.
This rifle is the reason this channel exist. Also this lends itself very much to a braced pistol configuration here in the states. Someone should make it...
This thing is awesome! Suprisingly high quality looking and with some decent quality of life features for such an early and untested prototype. The spring hold open on the top cover plus the automatic dust cover, nice looking sight adjustments, a nice compact stock. Really incredible. I always love efforts directed towards compactness in firearms, it brings out such interesting and clever design choices.
Thank you for your service Ian.
I love the look of the phenolic furniture. We used this in the airforce for jigs and specialty tools.
That mechanism, the tooling involved, and the end result are so far up my alley it's knocking on my door. I absolutely love this thing and I'd never heard of it before. What a find.
This is honestly something I would love to have. Awesome concept for a backpack/bedside gun.
Backpacking? Are you hiking through the south side of Chicago?
@@1bishw He didn't check for Zimmerman under his bed
Idk if a rifle caliber flashbang dispenser is the best possible bedside gun... Firing rifle rounds through the walls of my house while deaf and blind seems like a bad plan. At least the home invader would be deaf and blind too😂
@@kschleic9053 Put a can on it. I have a ultra light 7.5 inch KP-15 in 300 blk and it handles beautifully with a can-but it's a little clumsy for storage. This solves that.
As for walls, once you're out of apartments that concern is less of an issue.
@@1bishw Forays into my downtown can be... Interesting.
11:35 material like that (textile soaked in resin and then put under high temperature and pressure) is usually called micarta in the West. It's commonly used in stuff like knife handles.
Je to krása 😍
I bet whomever came up with that dual purpose hammer was real proud of themselves. That's super clever
This, by the way, is the way I think designers should aim to do dust covers - have them default to closed, and have the system mechanically open them *only* while the bolt is cycling.
That way, you don't have to rely on PVT Snuffy remembering to seal his gun to protect the guts from crud.
it’s a smart idea
Like the FNC, galil ace, or sig 550?
Such a system has more small moving parts which, if jammed by anything (say, dirt and crud), make the fun nonfunctional.
Also, more expensive.
Might be necessary when working with private conscriptovich, but having a simpler, more reliable gun seems better, if your guys actually know what they're doing
@@peka2478 All those small parts matter if you expect to shoot the gun a lot, not when you expect it to spend its life stuffed somewhere in a tank and if at all used as a last resort "spray your surroundings with high powered ricocheting pieces of metal right as you're fleeing your burning tank" type of thing.
A cover that flies off the first time the gun is used would likely work almost as well.
@@peka2478 Any gun that has a cover which opens when the gun is fired but doesn't close after the gun is done firing is already 90% of the way to a solution with an automatically closing dust cover (such as the M16, M4, etc family of AR-15 derived firearms).
All that is needed to make the dust cover close automatically is a relatively weak spring to push it closed again.
That's it, it's that simple. I don't know where this concern about "small moving parts that will jam the gun if blocked by dirt and dust" comes from, because the very act of firing the gun will cause some degree of gas to enter the breech, and besides that, there's a lot of big bulky fast moving parts, including the cartridge cases constantly coming out of the ejection port, which will create an environment that is highly likely to KEEP dirt and crud out at least long enough for the spring-loaded dust cover to close the port.
Or you know, just do the simple thing, attach the dust cover to the bolt's reciprocating parts, that way the only time the port is open is when a case is exiting. If weakly connected, such as with a spring weaker than the recoil spring, the now reciprocating dust cover will simply not be capable of preventing the bolt from going into battery and firing another cartridge, in the unlikely event that the dust cover DOES get jammed.
Technically something like this could work. There are several different kinds of feed mechanisms that push cartridges backwards instead of forwards. The SAE81 KRASA is one of them
The magazine release looking exactly like an AR is fascinating to me
I was thinking something similar. Ther is an ar-15 lower receiver replacement that accepts quad stacked magazines, making each magazine significantly thicker but holds around 40 rounds. There is also an ar-10 model that is chambered in 308. I wonder if this Czech gun can be designed to be both chambered in 308 and have a quad stacked magazine!
It was designed decades after the AR 🤷
It is impossible to use AK-like magazine release with this feeding system: first, there is no room for magazine release in this tiny gun, and second, AK-style rock-n-lock style magazine will not have sufficient precision for reliable feeding. Malfunctions due to claw misalignment would be extremely hard to clear, this feeding system has no easy access like GPMGs have.
@@vos2693 I am more just tickled by the aesthetics of that magazine release. Many button mag releases do not look exactly like that.
@@vos2693 Tell the Swiss their STGW57 rock-n-lock mags don't have precise positioning for feeding, and tell me what happens, lol ;)
I honestly wonder if the mag design was done to intentionally differentiate from the VZ58 mags, simply so users wouldn't accidentally load them backwards (er, front-wards). Usually the commblock nations didn't like to change the manual of arms very much, since that meant more training.
Pertinax is actually paper with phenolic resin. Similar verison with textile was called Textit.
It was primary material for printed circuit boards and beacuse its easy workability and durability loved by hobbymakers as much as 3D printers now.
Worked in company what making electric components to trains and trams .. They using this material like isolator for high electric and heat resistance
Who doesn't want one? Come on be honest.
I want one in 50 ae
No way you can get through the museum in half a day. My friend and I spent 4 full days in the museum, one day per floor!
They need to make modern version of that... its just have so nice design.
It's just crazy the amount of time, ingenuity, and money it took for the tops to say "nah".
I first saw this gun in Marauders - an extraction FPS set in a dieselpunk 1992 space where WW1 never ended. There's lots of historical guns there but I was sure the Krasa was an invention of the developers... Surely that couldn't possibly work... And lo and behold - I was wrong and corrected by Gun Jesus no less.
backwards feeding PWD in 7.62x39?
this is the sort of wild left-field gun design I like
Thats really neat. It's like a mini upside down PKM bolt assembly.
Your work is truly a public service. Thank you
Only something an American would say...😂
That operating system reminds me very much of the STG-44, and the magazine feed system looks like it could easily be converted into a belt-feed system. An interesting weapon to be sure.
STG get it from ZB 26
@@DOMINIK99013 The Czechs really did have everyone beat as far as pre-war LMG technology. The French had stuff that sorta worked but was too reliant on downright ancient design ideas, the Swiss were as always wildly expensive & impractical (and the Germans not much better), America was in the same position as France but our ancient Browning-derived designs were abnormally fantastic, the Russians as always had the beginnings of some good designs that they couldn't afford to make in quantity or quality. And the Danes, well, nothing more needs to be said besides "Madsen LMG."
I think this is the coolest forgotten weapon I’ve seen in quite some time. Great find and great presentation Ian
That material that the forward stock is made out of is probably phenolic. It was used in the aviation industry quite a lot in the 60s and 70s.
Yup, my first thought as well. Looks like phenolic.
There's something attractive about compactness in firearms and this video only proves it
Micarta handguard. By the way, this is an example where cut away animation of operation might be a nice addition to some of the videos.
It would be nice, but its a 1 of 1 prototype. Probably the first time it's been in the public eye. almost no info about it anywhere except here
@@Natedawgontheright Micarta was a reference to the fiber/fabric and resin furniture on this prototype, known as Micarta in English. As to the animation, that was just a suggestion.
Damn you Ian your short on this drew me in.
Boy, this really pushes the line between a "bolt" and a falling block. Terminology becomes difficult at this point. Some elements of this definitely remind me of a Madsen too.
I don't think I've ever wanted something to be in production so bad before. (might be exaggerating)
So essentially it feeds like some belt fed machine guns? It’s a shame development stopped, it does have potential.
Interesting video thanks, Ian.
It's pretty much a PK claw, indeed.
Miniaturized, for the 7,62x39 rimless, but same design.
Back in 2005 I visited military/firearms fair in Brno and there were exhibit of some small company, showing drawings of a gun with this concept, trying to find potential customers. Because I knew Krasa, I've shortly chatted with a designer and he told me, that their solution is similar, but improved (with better feeding claws). Unfortunatelly it was just a concept, no prototype phase. I still have a photo of their drawing somevhere in archive.
The backwards feeding system is very interesting indeed, but far from unique, the 1917, 1919,M2 etc. all do this, and there are millions of those guns made. Admittedly they're belt fed, but basically the same mechanism. I'd argue the one on the Browning MGs is even cooler since the feed claws pivot an an arm.
The selector switch is hilarious. “0” for zero bullets, “1” for one bullet in semi auto and “20” for all 20 bullets at once.
the positions of the selector is drilled in the head "one for yourself, zero to the ground, 30 (sa 58) to the enemy".
to je krása❤
Wow 😮, what a unique firearm, thank you so much for the historical work you do!
Thought we were looking at a cut down rifle, this is way cooler
You're the greatest youtuber Ian, a living legend you are.
Thats not terrible velocity for a 5 incher. add a suppressor just for the flash and your good. Big thanks to the museum for letting you play with this 1 of 1 gem
A few Interesting design elements I love the ejection port dust cover and how it's hinged from the top and springs back into place after ejecting the cartridge.
As we see from many piston type AR style rifles once the ejection port is open, the contamination problems due to the ingress of mud and other contaminants begins. This leads to malfunctions of the gun because the gas doesn't blow the contaminated materials out of the receiver like a DI gun.
I wonder how that spring loaded ejection port cover as shown on the gun in this video would work on an M16 or M4 type rifle or more to the point a piston type AR style rifle?
My guess is the ejection port cover would work extremely well to eliminate any ingress of mud or other contaminants especially in a piston style AR rifle such as the HK416 and derivatives.
More great content from Ian...
😎🇦🇺👍
Garolite is the closest material to the furniture that is common. Its similar to fiberglass but can use a different textile like cotton or glass mat and cured under pressure.
What a cutie. And the oddities of the feed system and gas-tube handguards just make it that much more endearing. I'll take two, please.
7.62 outta that little barrel?!? I bet that recoil absolutely rocks. Forward hand probably getting blasted too.
I really want one now.
The design is so efficient and creative, its just awesome.
I cant even imagine how interesting would this things malfunctions be. And another quirk is that with a magazine out of the gun and the bolt being back with a clear chamber your gun can very much not be clear at all.
Interesting would be an understatement, but yeah, i can see how much of a pain would be to clear a failure to extract/ failure to feed in this gun
But you’d see a cartridge sat in the bolt through the ejection port so visual check should tell you whether it’s clear
There's no bolt hold open catch, so unloading procedure would be the same as with normal guns, magazine out, carrier claws have nothing to pull over the hammer, than just rack the bolt to empty the chamber. But it's possible, when bolt is pulled back first and hold there manually... yet, this is wrong and every shooter should be corrected on the spot to not do this.
@@adamcichon6957 well the comment I was replying to said with the bolt back… so I’m not wrong in what I said
@@adamcichon6957 any gun with the mag out and bolt closed might not be clear
I can't recall any other video of McGollum being so genuinely excited about the gun. And I've seen them all. Really cool!