Why 7.5" AR-15's Have Such a Low Moment of Inertia

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  • Опубліковано 25 гру 2024

КОМЕНТАРІ • 139

  • @BrassMonkey.45
    @BrassMonkey.45 11 місяців тому +9

    I definitely feel better about building my 7.5 now and will continue to train with it

  • @randosmallfoot2132
    @randosmallfoot2132 10 місяців тому +6

    I'm calling you the Saint of 7.5, thank you so much for this info.

  • @rpoosua3452
    @rpoosua3452 Рік тому +4

    STAG ARM 7.5 AR-15 Lefty here. I never leave home without it. My backup is Canik TP9 SFX Lipsy.

  • @nicks9541
    @nicks9541 Рік тому +5

    Appreciate all your content on the 7.5, it has been my vehicle gun for a while due to all the reasons you’ve mentioned in this video and previous ones.

  • @rouchenelvann
    @rouchenelvann Рік тому +9

    I’d like to see a comprehensive video of why people should own a 7.5. I love the long forum exhaustive breakdowns. I’m considering a 7.5. I’m less concerned with terminal ballistics because I run the Maxim defense Tumble upon impact rounds made specifically for short barreled rifles/pistols which (according to them) are designed to still have that tumble effect all the down to 500 fps!

    • @Ronin_Noir
      @Ronin_Noir Рік тому +2

      Please, do tell more!?! Where did you buy them?

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +3

      That sounds interesting.

    • @rouchenelvann
      @rouchenelvann Рік тому +1

      @@Ronin_Noir Saint barbs… Maxim defense. Either of those websites will have it.

    • @MinutemanMedic
      @MinutemanMedic 2 місяці тому

      What about using a TMK?

  • @Dudley-q1j
    @Dudley-q1j Рік тому +3

    Short AR pistols are a great option for close in self-defense, I cannot understand why most people dump on them, they may not be useful for 500yard shots, but as an armed civilian, the odds of being in a legal self-defense situation at that range is astronomical.
    I have tried several "shorty AR pistols with 7.5", 8.5", and 10.5" uppers and settled on 8.5" as my preferred configuration. My primary self-defense AR pistol is an 8.5" 5.56 with a reflex and backup iron sights, its stored with a 20-round mag and is extremely fast handling. For cheap practice use a CMMG 22LR adapter.
    Recently I started playing a 300 Blackout in the same configuration and have had a a 7.5" 7.62x39 setup as well for ammo diversity option for some time now.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Putting holes where holes don't belong is what these short guns are really good at. I can bust level IIIA body armor with a 7.5" rifle. You can't do that with a PDW or PCC.

  • @RonWells-ov9uf
    @RonWells-ov9uf Рік тому +2

    I get this concept. I come from the automotive industry. It's the same concept as unsprung weight is on a vehicle. Meaning the weight of the wheel tire brake rotor hub and spindle assembly determine the throw inertia of the assembly away from the road surface. So the spring mechanism can more easily and faster push a lighter assembly back to the road surface. That's why light components are so important in racing applications and why you'll see things like drilled brake rotors and other weight saving techniques in motor sports.
    A good analogy is the heavier a hammer is the more time and effort it takes to control it and bring it from the end of the backswing to the item being restruck.

  • @RemoteCamper
    @RemoteCamper Рік тому +4

    7.5's are AWESOME!!!! HUGE kick (recoil) and large fireball!
    Its so small its like a toy, and SO maneuverable. NO knocking walls when clearing rooms.
    I built a 7.5 SBR back in 95. I was a pistol kit that I put a stock on. Back then (apparently) it was SO unheard of because the forums blew up as to how I made it work.. It just did.
    this has been my TOY, my go-to and my project, upgrading every 3-5 years.
    It went from standard 90's AR to, with a carry handle to a flat top, new stock, and now a QD barrel, with Binary trigger.

  • @shaneworden1325
    @shaneworden1325 4 місяці тому +3

    Just built a 7.5 BCA. AMD stumbled apon your video. Just wanted to say. Supper informative. And you are a natural in front of the camera. I subscribed.

    • @Tier1Citizen
      @Tier1Citizen  4 місяці тому

      Welcome aboard! Yeah, I've been doing this a very long time. You should've seen my first videos, back in the day. I wasn't anywhere near as relaxed as I am now.

  • @Knight_of_the_Old_Code
    @Knight_of_the_Old_Code Рік тому +1

    Just acquired a Sig Rattler in .300 BLK and it's a freaking awesome little (emphasis on "little") PDW/Vehicle gun. Really nimble and accurate as heck for a 5.5" barrel. It's rocking one of your single-point slings.
    I always enjoy your 7.5" videos! Hope you're well!

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Oh sweet! Tell me what you think of it, over time. I'm curious how their quality control is now, it used to be really bad.

    • @Knight_of_the_Old_Code
      @Knight_of_the_Old_Code Рік тому +1

      @@Tier1Citizen Will do!

  • @zacharyhunt3412
    @zacharyhunt3412 Рік тому +2

    I have used a 8.5 inch Noveske AR with a titanium suppressor and it was a fun experience and unique set up

  • @theexpressionbooth
    @theexpressionbooth Рік тому +3

    I got a huxwrx can that's printed. It's awesome. Quiet enough and even my over gassed guns run great. Although it's not aluminum, but it's very light.

  • @mtnbound2764
    @mtnbound2764 Рік тому +11

    i still like a 10.5" for a 5.56 shorty. anything shorter i default to .300blk

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      Check this video out: ua-cam.com/users/videoQzGCzv1KIQI

    • @justusbryant7366
      @justusbryant7366 3 місяці тому

      @mtnbound2764 ummm why. You got 30 rounds lol. A 7.5 556 is fine for a civilian. You people act like you are military lol.

    • @mtnbound2764
      @mtnbound2764 3 місяці тому

      @@justusbryant7366 it doesn't have anything to do with civ or mil. the fact is that under 10.5" 5.56 really looses alot of energy, where as .300 blk is optimized for short barrels. thats the logical reason.

    • @justusbryant7366
      @justusbryant7366 3 місяці тому

      @mtnbound2764 You dummy. It has enough energy to take someone down. They arent going to just sit there and take them or bounce off. You just repeat some stuff you heard. I bet everything that it does better than your 9mm!

    • @Hornet135
      @Hornet135 3 місяці тому +1

      @@mtnbound2764 But .300 blackout is optimized for being heavy and expensive too.

  • @thomascozart1095
    @thomascozart1095 Рік тому +4

    Would you please explain why you would choose a 5.56 with a 7.5” barrel vice a 300BLK? Thank you

  • @markr6937
    @markr6937 12 днів тому +1

    I built an ar pistol 5.56 with a 7.5" barrel. wondering how you determine which suppressor to use?

  • @alanmeyers3957
    @alanmeyers3957 12 днів тому +1

    I used to have a 7.5 inch Olympic arms, It was full auto and it was a decent shooter.

  • @cindyshot3599
    @cindyshot3599 Рік тому +5

    What is the chest rig you’re wearing?

    • @justsaiyan8678
      @justsaiyan8678 Рік тому +1

      Minuteman defense gat caddy.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +2

      The chest rig is a First Spear SICR 6/12.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +2

      Dude, I can answer my own questions. I don't need a channel moderator. Also, you're wrong on the chest rig; It's a First Spear SICR 6/12.

    • @justsaiyan8678
      @justsaiyan8678 Рік тому +1

      @@Tier1Citizen I just read the description and answered because I wanted to know as well.

  • @geigelg77
    @geigelg77 Рік тому +3

    Quick question is that am Anderson upper I’m in the market for a new receiver set

  • @A_Son_Of_Yahuah
    @A_Son_Of_Yahuah Рік тому +15

    Be nice if you would start building them again. The way this world 🌎 is going, we are going to need them❗️Blessings brother...stay safe 🙏🏾

    • @hardlylivin6602
      @hardlylivin6602 Рік тому +5

      You could build one yourself. I built mine. They are surprisingly easy.

    • @A_Son_Of_Yahuah
      @A_Son_Of_Yahuah Рік тому +1

      @@hardlylivin6602 No one builds them like Abner... He's the best!!!!!!!!!!!!!👍

    • @hardlylivin6602
      @hardlylivin6602 Рік тому +1

      @@A_Son_Of_Yahuah He may very well make a solid upper, but don’t sell yourself short. You could also build a good upper, as long as you do a little homework, and absolutely do not buy junk parts. Buy proven components as much as possible.

    • @A_Son_Of_Yahuah
      @A_Son_Of_Yahuah Рік тому +1

      @@hardlylivin6602 I know all that, but I rather let the experts handle the building part and I'll support them.

  • @overwatch2671
    @overwatch2671 Рік тому +1

    I'm not sure what happened but all of a sudden your channel pops back up in my feed. Good to see you Abner.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Probably because I am releasing a video every four days. With that kind of release schedule, the algorithm doesn't know what to do with me and it pushes my content.
      I literally am having my own videos pushed at me. That's when you know you have really started messing with their system.

  • @nikos6220
    @nikos6220 Рік тому +2

    Wow, good job!!! that is one clever video bringing physics in without scaring people off.
    Another related one is people comparing weight specs on rifles. People don’t get that it matters how far off your body you have weight matters. Hence for example it is utter nonsense for practical purposes in shooting (carrying around - different thing) to compare the nominal weight of a standard pattern to a bullpup

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      I agree with you to a certain point on the bullpup thing. Eventually weight on a sling is still weight and bullpups are unfortunately on the heavy side.

    • @nikos6220
      @nikos6220 Рік тому +2

      @@Tier1Citizen yep, hence the ref to carrying. But sometimes not even that is the case. The MCX-Spear 16‘ 308 is half a pound heavier than my 308 MDRX. That would be a good side by side for comparison on the physics.

  • @mtnbound2764
    @mtnbound2764 Рік тому +2

    a longer lightweight profile also has a very good / low moment of inertia, and you dont have the drawbacks of a super short 5.56, which are pretty significant.

    • @abnr1983
      @abnr1983 Рік тому +2

      They both have their pros and cons. Longer setups are harder to wield inside a vehicle and tight spaces.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +2

      Putting holes where holes don't belong is what these short guns are really good at. I can bust level IIIA body armor with a 7.5" rifle. You can't do that with a PDW or PCC.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Truth!

  • @hardlylivin6602
    @hardlylivin6602 Рік тому +1

    What do you think about gassing the rifle to allow it to run 223 pressure ammo? Run primarily 5.56 but allows for 223 in a pinch.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      It already does. The two are very close.

  • @Maatdrummer1
    @Maatdrummer1 Рік тому +1

    You've said but I've forgotten what trigger you have on that. An M&P needs a slightly softer trigger than what it comes with.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      I use the Geissele SSA. It is a good balance of performance and forgiveness. Another good option is the ALG Defense ACT.

    • @Maatdrummer1
      @Maatdrummer1 Рік тому +1

      @@Tier1Citizen Thank you. I've read about the Geissele SSA. It seems like a well-liked drop in trigger system.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      I have several they are my favorites.

  • @jamesbaker1392
    @jamesbaker1392 Рік тому +2

    My first AR upper was a 7.5” everyone advised me against it. If it wasn’t such a pain to SBR it I would’ve kept it on my lower, only reason I took it off. Man that thing is loud though lol

  • @pawsandpedals407
    @pawsandpedals407 3 місяці тому +1

    What zero do you use for 7.5? 50yd zero?

  • @MinutemanMedic
    @MinutemanMedic 2 місяці тому

    "when I go from here, to HERE" points the gun right at the camera and made me jump hahaha

    • @Tier1Citizen
      @Tier1Citizen  2 місяці тому

      Oh lordy. People get so wrapped around the axle on that one. I have had people yell at me in the comments section, stop muzzling me! Bruh!

    • @MinutemanMedic
      @MinutemanMedic 2 місяці тому +1

      @@Tier1Citizen 😂 it was just the way you turned around so quick but yeah clearly you can’t shoot me through the TV.

  • @donsal.t.1765
    @donsal.t.1765 Рік тому +3

    I had just sold my 16" AR bc I had another 7" or 7.5" AR pistol w a brace then this stupid rule kicked in smh, had to buy a FN barrel for the pistol's lower. Now In the process of buying a quality-ish lower for the FN barrel.
    Witt Machine sells a suppresor called the Canooter for 350, but I'm so poor and lack discipline that I'll end up buying their sound mitigation device at 150 bc I'm not using that 7" AR as truck gun or home defense without some kind of sound device.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +4

      Stupid gun laws... I'm right there with you.

    • @donsal.t.1765
      @donsal.t.1765 Рік тому +3

      @@Tier1Citizen *sigh* yeppers

  • @tmaddrummer
    @tmaddrummer Рік тому +1

    Abner, I would offer for your consideration as a get home rifle or a fighting rifle the FoldAR. For me, I see this as a viable option to do both. Nothing is perfect, but the FoldAR offers "options." Peace and Blessings!

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      I've been thinking about one of those. Do you have one?

    • @tmaddrummer
      @tmaddrummer Рік тому +1

      @@Tier1Citizen
      Yes I do. I find it to be just what I was looking for without having the constraints of the SBR route. So far no hiccups with 400+ rds of 55 & 62 and I'm using a Holosun HE515CM-GR. With the recent run on ammo again, I'm trying not to run through too much too soon, otherwise I'd have already put a lot more through it. I was treated very well by Misty and Dustin.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      Please shoot me an email. I am interested in talking with you about it: tier1citizen@gmail.com

  • @TerminalM193
    @TerminalM193 Рік тому +1

    When you plan on having another sale on the slings?

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      There's one going right now for Halloween. HS20 gets you 20% off all dog leaches and slings. Go to it!

  • @Mr.frag-out
    @Mr.frag-out 15 днів тому +1

    Exactly my thoughts on the 5.56

  • @iTzxNooBs
    @iTzxNooBs 10 місяців тому +1

    You would love a mini/micro draco with a folding stock

    • @Tier1Citizen
      @Tier1Citizen  10 місяців тому

      Already had one. You're right, they're awesome.

  • @hungarianhillbilly4144
    @hungarianhillbilly4144 Рік тому +1

    Are you able to use your iron sights with the Trijicon RMR on the riser?

  • @Mr.frag-out
    @Mr.frag-out 7 днів тому +1

    Are you prior military?

  • @mtnbound2764
    @mtnbound2764 Рік тому +1

    what barrels do you run on your 7.5"s?

    • @brianafassett
      @brianafassett Рік тому +2

      Ballistic Advantage if I remember correctly. That’s what I built mine off of.

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      I run Ballistic Advantage barrels whenever possible.

    • @mtnbound2764
      @mtnbound2764 Рік тому +1

      @@Tier1Citizengood stuff, I just did a 14.5" BA build and love it so im on that 14.5" bandwagon at the moment. thanks!

  • @T2YCO
    @T2YCO 6 місяців тому +1

    Tinnitus sucks you are strong to be out here giving us video’s people do t know how serious that is I went to a range with my friend last year w a 5in arp and thought I had it also and after a week it start feeling better but my left ear has never been the same WEAR EAR PROTECTION EVERYONE PLEASE YOU WILL REGRET IT , but good video bro I’m thinking about a 7.5 inch after selling my 5

  • @rickolson6826
    @rickolson6826 Рік тому +2

    The guy at the range recommended I not bring my 7.5" in to practice because of a current law under review. Any thoughts?

  • @andrewcopeland1517
    @andrewcopeland1517 Рік тому +3

    Shorter AR doesn’t stop you from traveling past the target on the transition. You not moving your eyes to the target before your gun is why you overtravel. Not the weight of the gun

  • @ehornad
    @ehornad Рік тому +2

    More videos with the Trek Ti 😍 (not 7" of course 😂)

  • @NewWay439
    @NewWay439 Рік тому +2

    Thank you for doing the.videos ion this platform been looking at the 7.5 just for what you said get home . But no one is putting out real world use information that’s been tested!!!

    • @andrewcopeland1517
      @andrewcopeland1517 Рік тому

      There’s plenty of real world use 😂 it sucks. This dude is saying it’s nice and light on the range

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Andrew, go start your own channel. Stop trolling mine. This is the only waring you're going to receive.

    • @NewWay439
      @NewWay439 Рік тому +2

      I don’t think that’s what He said at all. It absolutely does not suck from his perspective. What ihe said has only been confirmed by other reputable professionals who carry the use daily. 7.5 has been proven to penetrate through vehicle doors to wear other barrel lengths of the same caliber fragment . Proven over and over again so for those who are relying on it . This length is used to be a deterrent and a crowd pleaser . Not necessarily a SHTF or go to war gun. It absolutely fits the role of a PDW, which is what he referred to I can say from first-hand experience of being shot and being shot at that this definitely is the right tool for a specific job. Home defense and vehicle work and protection. Bullets change the demeanor, the motivation, the intention, and the actions of those who receive them and I know this from first-hand experience. From the context he’s talking about he’s correct and this weapon does not suck if you have any credible different experience please feel free to inform me I’m always open to listening and learning .

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +2

      Brian, what you don't realize is that Andrew has gone across several of my videos making dumb comments meant to elicit negative commentary and start dumpster fires. Trust me, I've been doing this since before social media was even a thing. I've been on UA-cam since it was an ad free platform. Guys like Andrew are a dime a dozen and I like to be respectful and give folks a warning before I block them.

  • @christiangarcia8121
    @christiangarcia8121 Рік тому +1

    Why don't you use a suppressor on it a d just use plugs

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      Cans on shorties don't work well and they eventually are a failure waiting to happen. Short guns will blow out baffle stacks rather violently. I blew the front end off of an Ops Inc can years ago when it was on a shortie. I'm lucky I wasn't hurt when it occurred.

  • @brianparker3901
    @brianparker3901 Рік тому +1

    Thank you.

  • @BlueCollarDude101
    @BlueCollarDude101 Рік тому +1

    Looks like a good truck gun

  • @Nightstalker102
    @Nightstalker102 Рік тому +1

    I'm just gonna say that was actually relatively slow compared to the people I shoot with, others I've seen shooting , and I shooting SBRs .

    • @Tier1Citizen
      @Tier1Citizen  Рік тому +1

      Well wonderful. I'll have too work on it to meet your standards.

    • @EMSPiper
      @EMSPiper 6 місяців тому

      @Tier1Citizen some people huh.

  • @HopefulForever-ln5xm
    @HopefulForever-ln5xm Рік тому +2

    Force = mass x distance

  • @andrewcopeland1517
    @andrewcopeland1517 Рік тому +3

    7.5” 5.56 is a known quantity. Known to suck

  • @radjamss6390
    @radjamss6390 Рік тому +1

    I want a 7.5 for the lulz

  • @mtnbound2764
    @mtnbound2764 Рік тому +1

    thats shooting pretty close to the steel isnt it?

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      Yes it is. Check this out: ua-cam.com/users/videoi3n2wdL-I-g

  • @bryanfox2735
    @bryanfox2735 Рік тому +2

    Nice pat mac battle rag!!!

    • @Tier1Citizen
      @Tier1Citizen  Рік тому

      Thanks, that is actually something I grew up doing. Mowing yards in FL mandates that you have a rag on the front of your pants.