P320 - PRE v. POST UPGRADE ANALYSIS
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- Опубліковано 21 лип 2024
- In this video I explore how the pre-upgrade P320 works and what exactly is different compared to one that has undergone the voluntary upgrade program. I further dissect both the pre and post upgrade pistols and provide an up close view of all the parts and explain their mechanics.
00:00 - ANNOUNCEMENT
00:58 - INTRODUCTION
02:26 - DISCLAIMER
02:45 - RE-UPGRADE TRIGGER MECHANICS
05:22 - THE DISCONNECTOR
07:48 - THE SAFETY LEVER
11:04 - THE SEAR
15:28 - THE TRIGGER
17:32 - THE STRIKER
20:20 - THE RECEIVER (FCU FRAME)
21:27 - OUTRO
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Nice video! and folks, that is why the updated version of the p320 and the new p320s are not going to go off in your holster by accident. That trigger has to move for that gun to go off, and the video is very professionally done. Thank you
How about the video from gunghis khan? I believe he had a new sig. genuine question as I like the p320 but the safety issues are concerning
I have done a very thorough mockup of the P320 with the update from now years back and the newer x5 and p320 legions, etc. And there is no possible way the gun will go off without pulling the trigger.
I should also point out that in his video he stated that the reset spring was broken and Sig, claimed that was the failure. In reality, Sig, had already discontinued the use of that part because they considered the striker reset spring redundant. Therefore, that claim does not hold any weight, and the reality of the situation is most likely that the trigger was pulled inadvertently.
@@SIGMECHANICS I like how people like you continue to make excuses.
@@w00borg34i mean he was in middle of competition and reholstering, not crazy to think his shirt or finger could have engaged the trigger when reholstering. mind you i stopped carrying my 320 after that video but still, could have easily had finger or something in trigger. trying to be fast hes in competition adrenaline running and reholstering
Man you are simply gifted in mechanical engineering. To look at this stuff, understand it, and then present it in such a clear manner. Really impressive
I appreciate that very much and I’m glad the video was helpful! I really wish I had the 3d models I use in the newer videos back when I started because I feel they would have really helped.
Thanks again!
It's very simple and straightforward.
Thank you. An intelligent, coherent source of information is difficult to find. You’re an incredible teacher.
Thanks!
Wow this is way more education and in depth than i thought it would be…. And it is EXACTLY what i was looking for. This has made me confident in my purchase and really helped teach in depth in an understandable manner. Fantastic work
16:20 amazing footage, I can't believe you were able to show the trigger action that clearly
Your work/dedication is phenomenal. You are very appreciated. Thank you so much
Thank you @Mercedes Carballo, I appreciate your saying that.
Wow, can I just say I “like” a video every now and then. As far as channels I am subscribe to, there are very few. Your channel has just been added to the list. In-depth and educational is an understatement. I had a lot of concerns about buying this pistol. The knowledge I easily acquired through your videos has put my mind at ease and secured my decision. Thank you.
Hey @Joshua Fratti! That’s very kind of you to say, I’m glad to have earned your sub!
The goal of the channel has always been to inspire confidence through education, so people will be comfortable with their firearms and try new things. Of course, that’s much easier when you feel you understand your gun down to its core, so your exactly the type of subscriber I built Sig Mechanics for. Anyway, I’m glad to have you here!
If you ever have any questions let me know you can always reach me at sigmechanics@gmail.com
I have been scouring the Internet for exactly this level of information. Thank you for your time and effort.
Thanks for watching! Glad you finally found what you were looking for here.
I just recently found your channel after hours researching about the drop safety issues with the P320 line. I have a used P320 X-Compact on layaway for me and now that i know what to look for, I can definitely find out if i need to do the upgrade or not. I can't thank you enough for your easy to digest video! I just subscribed to your channel, now that I'm finally getting onto the SIG bandwagon. Thank you again!
Knowing more about your Sig will most definitely make it easier to enjoy it and be confident when using it! It’s a great platform especially if you like to mod it.
Thank you for the in-depth video. I just switched to all SIG and the drop issue had me somewhat concerned. But in watching your video and in taking apart my own guns to clean I realize now that it appears that they fixed any issues, again thank you.
Hi @Claude Johnson. I’m glad to hear the videos were helpful! Thanks for watching.
Great video. You also have a very pleasant voice, which aids in understanding the differences in the FCU’s.
Thanks!
Thanks for putting this video out. It definitely has put my mind at ease to edc my P320.
Bravo! 👏
Mine too.
Thank you! This video is one of the best that I've ever seen on a firearm topic.
That’s very much appreciated! Thank you for watching.
Such a great detailed breakdown an informational piece. Much appreciated!
@Donald Coleman, thanks!
Excellent video and explanation of the "upgraded" version. Just purchased a NIB P320 circa 2017 and the serial number came back as Not Required on the Sig site. I wanted to know the difference between pre and post models as I like to know how my firearms work and your video explained it in a very detailed way. Great job and you have earned yourself a new subscriber 👍
Thank you! Enjoy your new 320!! You’re going to really enjoy the platform. If you ever have any questions feel free to send me a message.
Fantastic explanation and visuals. Thank you.
Great video! I purchased a sig P320 x compact that was used but never fired. Dealer said it was likely "new old stock." I had remembered hearing about the drop issue on the 320 years ago, and wanted to make sure my pistol was manufactured with the revisions.
Due to your video, I was able to confirm it has the revised parts- Thank you!
Awesome! I’m glad I could help, I made this video originally because I remembered having the exact same thought when I first started with the P320, now at least the community won’t have to wonder anymore!
Chefs kiss. Bravo. Beautifully done
Thanks so much for the deep dive into this. Super informative.
You’ve answered my questions and concerns and now I have neither. Thank you for your time and the presentation liked and subscribed.
Thank you! I’m always happy to hear I earned a sub from the content! If you ever need some help feel free to shoot me a message.
Thank you for explaining I just got my P320C a month ago so I feel like I don't have to change it thank you for professional review asome job!!!
Thank you! You don’t have to upgrade it if you recently got the 320 (assuming it’s newer than 2017), all the changes are included after that year model.
Great video, I don't usually comment on instructional videos. This one was explained very well and having the camera focused on the part in particular was very helpful as well. I have a new P320 DH3 and was curious how sig fixed the problem. This has me feel confident that my pistol won't go off unattentionally. Thank you for the good explanations and knowledge I appreciate it.
Thank you, I very much appreciate you taking the time to comment then! I’m also glad the video helped, since you’re new to the platform feel free to reach out if you ever have any questions.
This video is absolutely invaluable with all the current controversy surrounding the Sig p320.
Seriously. There are a bunch of mechanically ignorant scairdy cats out there.
As I have posted in every P320 video...
*I WILL BUY YOUR DANGEROUS P320! ALL OF THEM! NO LIMIT!*
@@m4rvinmartian I got an axg legion I’ve been second guessing 😅 (only because I bought it, watched some cool videos on it and THEN started seeing all the AC incidents. Like why UA-cam did that to me I’ll never know 🤷♂️)
@bobdylan7432 Don’t let UA-cam get you worried. Unfortunately, doom and gloom gets more clicks and therefore lots of channels push that narrative. I have quite a few videos that will help give you piece of mind, all backed by on-screen testing and data.
You have an amazing gun! Enjoy it!!
@@SIGMECHANICS very true, easier for people who have ND’s to hop on the bandwagon of a few bad incidents and actually deflect the responsibility and embarrassment. Thank you for your videos, they articulate the function and mechanics of the 320 spectacularly and I(among many others) appreciate the time and effort put into them.
@@m4rvinmartian Just happened to a police officer in a town near me. Gun fired when he set the holster down on a table. He must have been mechanically ignorant.
Fantastic vid. Thanks. I pulled my post-upgrade version out to follow along. 😄
Lol, best way to learn something for certain is to get hands on! Glad you enjoyed it and thanks for the kind words.
15:15 A possible explanation as to why Sig reduced the sear's vertical ledge was to keep sear/striker engagement more consistent. Unlike hammer fired guns which have all relevant engagement surfaces fixed to the frame (and therefore fixed relative to each other), striker-fired guns have to account for the slop between slide and frame as well as the striker's play within its channel. So every time the slide moves forward and the striker touches the sear their engagement may be slightly different from the last. This is why when adjusting overtravel on a striker fired gun it is important to push the slide down towards the frame while testing to make sure there is enough travel to achieve break even when engagement between sear and striker are at their maximum.
By getting the striker's leg to touch the base of the sear, Sig limits how far down the striker's leg can go, ensuring that the contact area between the striker's leg and the sear's ledge has less variation, in turn leading to a more consistent trigger pull shot-to-shot. At least, this is my (somewhat) educated guess.
I just came across your channel. Your presentation, explanations, and attention to detail complete with measurements are fantastic! I do hope that you consider covering aftermarket trigger parts like those from Grayguns and Apex and show how they differ from OEM. In any case, keep up the great work!
Awesome video, especially the simulation part!
Thanks @Jeff Vinter. That part took a while because I wanted it to be 1:1 scale since I may or may not be using it to make some actual parts down the road for another video idea.
I’m glad you liked it! Thanks for watching.
I’m very excited. Will be starting my first P320 build off the Custom FCU. Your videos are awesome
@ryanburbridge. Thanks! You’re so lucky. The potential with a custom FCU is infinite with the P320! Let me know if you need anything as you go.
@@SIGMECHANICS i appreciate that. I am watching all your videos at the moment. I really enjoy seeing every last detail of a particular fire arm.
I haven’t seen very many details about caliber conversion.
Very good information. Also not all needed the upgrade. Mine was sent back from them stating that. My slide is different from both you're showing. Mine is chambered from factory .357sig. My 2 9mm did get the upgrade. which had those slides you were showing.
I am going to start modifying my p320 based on this video. Thanks for layout general ideas and roadmap for improvement.
You’re very welcome, if you have questions while working feel free to get in touch.
Great analysis...just what I needed.
I just bought my P320 M18 today and all of these videos you have uploaded are definitely gonna help me a lot! Going from a Glock to a Sig is definitely a change.
Congratulations! Glad you’re trying out something new, I hope you end up liking it! It’s always hard when starting out with a new gun to fully understand the ins and outs, so if you watch the videos and still have questions, feel free to message me via email or over in IG, I’m always happy to help!
@hirochavez99 Yes it's a big change seeing as how the SIG sits about 80% cocked when in the resting position and a Glock is unable to fire with the little bit of inertia that the spring has lol. Would you appendix carry a 1911 in condition one?
@10:20 I think they changed the striker safety lever design to remove any possibility of the trigger safety lever somehow "bouncing up" and allowing it to contact and disengage the striker safety. Now it is strictly a function of the trigger's position. In other words, the trigger HAS to move rearward for the safety lever to move upward and contact the striker safety.
Another excellent vid.
Love your content. I remember nearly a decade or so ago when Sig was reinventing it’s brand, they said that the stopped thinking of themselves as a firearm company and instead started thinking of themselves as an engineering company that happens to make firearms.
It seems like they were being truthful with that statement. They are constantly analyzing their designs and making improvements to their products. People like to hate on them by saying that they use their consumers as beta testers for first-gen products, but I don’t believe that’s their intention at all. When issues do arise, they address them, and also incorporate additional changes that aren’t related to the issue they’re addressing but that make their design better.
I actually own a pre-upgrade P320 that I never sent it. And I don’t plan on ever sending it in.
Thanks again, for your content; I really enjoy videos!
I regret sending mine in
Hey you just sent me the link to this video. I really appreciate that. Unfortunately I don't have the time to go through it right now. I will here in a day or so. Thanks again for your help!!!!
Great video. Informative and helpful. Buying my first P320 soon (used). It has not been upgraded, but I plan to have it done as soon as I can. Subscribed and liked.
@BMJ, Glad the video was helpful! Let me know if you have any questions once you get you new P320.
Best video on the subject ever.
...this video cleared some things up for me... :)
I was second-guessing getting a 320 before as I did not understand its internals. Now I do.
Others just film the gun lying on the table, rambling about how unsafe it is but that they still like the gun.
Here I am not given the opinion, but rather the facts, leaving me to build my own opinion...
Please keep going! 😎
Glad I could help!
My 320 was bought a few months ago and I didn't know anything about the pre vs post upgrade crap and had to send mine in
Nicely done!! Perhaps a future vid could cover the differences between the 9/.40/.357 and the .45 FCUs.
Absolutely, yes! I'll see what I can do, I've added it to the list. Thanks for watching! Glad to have you here.
Loads of data… well thought out and presented! Thanks.
@Ducci Mann...Glad you enjoyed it and very kind of you to say! Stay tuned there is more on the way.
Wow what a fantastic and proffessional video!
Thank you!
Wow good video, great videography! Thanks much.. Just subscribed! 👍
Awesome! Glad to have you here. Thank you for your kind compliment too.
Another excellent video.
Thank you! @John Stewart.
15:00 it seems clear that the striker now interacts with the base of the sear so that it can't be rotated laterally as easily, because the ventral face of the striker hits the dorsal face of the sear. Seems like a smart change to me
Such a great video!
Your photography/videography is excellent! AMD, I like the grayscale.
Thank you! It actually started by accident, my very first video was just on a white wall and tabletop, turns out that the reflection of light made for a better view of the gun, and the clean background was a nice change from the blacks and browns of most videos I’ve seen. Eventually it just became “the brand”. Thanks for watching!
Excellent work,, as usual ..
Great video! I just purchased a P320 Spectre Comp as my new EDC (after training with it I will carry it) and this video was a great source of information!
Any luck in the past year figuring out how to EDC this hand cannon?
@Sinsofcarolina it's very easy to EDC, good quality kydex holster is the key. I've always carried full size prior to this one so it wasn't hard to figure out. I have zero issues with comfort or printing
@@ExtinctLS1GTO nice. I’m on the taller side so hoping I can get away with it. Any specific holster you like? This gun shoots like a dream and with my larger hands I’d feel more confident with a full size vs compact for carry
@Sinsofcarolina I'm 6 foot @ 225 pounds and this thing is a breeze to carry..I personally have been loving Legacy Firearms holsters.. I've replaced all my Tier 1 for their stuff. I also have a P365 AXG Legion I'm going to start carrying for warm weather. So if you want something smaller that'll be a good option since the grip is long enough for my hands at least!
@@ExtinctLS1GTO awesome man appreciate that. I’m 6’2 and 235 lbs so we should be comparable builds. I’ve got my eyes on the XMacro Comp to rotate in for summer carry with my P-07. This Spectre Comp got me back into Sigs
Incredible and very well done video. Thank you!
Thank you @Eric Nelson!
Great presentation!
@patton9970, thank you!
These vids are fantastic
@Abolish the ATF and Repeal the NFA, thank you!
The tab sticking up on the right side of the pre upgrade frame, was a carryover from the p250 firing pin blocker, when the slide was out of battery.
I appreciate the insight! I've asked several Sig reps with no-one being able to give me a response.
I bought P320 RX compact when they came out. Shot few boxes through it then I've put gray guns flat face trigger in it, shot another few boxes but for some reason I've never fell in love with it. Never send it to Sig because I've misplaced stock parts and on a top of that I would have to get new version of trigger from GG. Still sitting in my safe waiting till I make my mind what to do with it..... One day. Lol
I would imagine Gray Guns would replace the trigger for free, and SIG would do the upgrade without the stock parts. It's a safety thing after all.
It's crazy I thought it was a simple fix, but they really went through the design and changed alot of things. They wanted to make sure, there was no issues in the future.
I am so glad you have made these videos. I am in the process of building a 320. I am starting out with a bare fcu. I was wondering if all of the post parts will fit it. I would hate to order all of the fcu parts and have them not work. This is my first SIG build. I've built many glocks and ar15's so im not new to building gun, just new to the SIG's.. Thanks again for your time to make these videos. They are a huge help.
It’s my absolute pleasure! I’m glad I could help.
You’re doing good, great presentation… good for you on the rep for your channel. You deserve it. Videos well thought out and presented. I see you may have gotten some other new things besides the pre-update FCU. You’re going to hafta polish up this one. I see some sear housing holders… nice touch!!! One question, will the pre-update FCU work with new parts??? Good luck… glad to see your work is recognized.
Thanks @Torqd Off
Half the battle is finding creative ways to best showcase those small parts without interrupting the viewer.
As far as your question goes, I’d have to see. Both pre and post FCU will accept either sear housing, but I would be very interested to see how much of the pre upgrade parts inside I could fit into the updated sear housing. I assume the safety lever is no problem, but the sear may have a problem since they did change the dimensions of the housing.
I’ll check it out and get back to you there, maybe post it as a short here…
And FYI, i know you’ve been asking for a while now, so…I am working on a video to demonstrate the polished FCU. Just want to complete the voluntary upgrade program on my “new” chassis first. So stay tuned for that!
Thanks for watching!
Thank you for the presentation! I have a question about my upgraded FCU. Why does my trigger have a double click on reset? It has a false reset then the actual reset. Can this condition be remedied? Thank you.
Initially I’d say it’s the trigger/trigger bar not seated in properly or the disconnector doing something odd. Send me an email at sigmechanics@gmail.com and we’ll see if we can answer it together based on your specific setup.
This is awesome!
@Hope Williams, Thanks!
Excellent explanation 👍👍
Simply fabulous. 👍
Very interesting. I got into Sig chassis guns when they released the P250. I was a great gun if you were used to revolvers since it had a long trigger pull, but it was smooth as butter for a hammer fired gun. One of the selling points of the gun, over the other manufacturer's striker fired designs, was the ability to pull the trigger another time in the event of a light primer strike. "Second strike capability", I think they called it.
It looks like the intention was to carry this over into a striker fired chassis format. I even remember the early P320 ads mentioning second strike capability. It appears that they fully dropped the entire concept with the P320 redesign and the term has entered the dust bin of history.
That’s very interesting! I didn’t hear about the second strike thing before, I’ll definitely look into it. Thanks!!
An excellent breakdown of the P320, but I also want to commend the use of MAGNETS as a display stand. brilliant.
Thank you! Not many people catch into the magnets, good eye.
@@SIGMECHANICS it’s an outstanding use for them. I just installed my Apex trigger kit with your videos as a guide. An incredible improvement in trigger feel, and would love to see a breakdown of the trigger with your graphic like the trigger shoe comparison.
@@Sjackson2369 well if you want a breakdown of the Apex trigger, do I ever have a video for you…(scrub to 7:43 to start and then 14:20 for breakdown): ua-cam.com/video/so3b8JXJDlg/v-deo.html
Also you can see more on the apex kit here:
P320 - SECRETS OF THE APEX FORWARD SET TRIGGER BAR (2022)
ua-cam.com/video/twgqV49i2_8/v-deo.html
Awesome video! By far the best video explaining everything one needs to know about these issues plaguing the P320.
My question: is the Sig P320 M18 (the one in flat dark earth and with manual safety) post updated?
Thank you! New subscriber from 🇵🇭
Thank you! The easiest way to confirm if you have the updated version is to see if you have a disconnector. If you have it, you are good to go!
Just got a Sig. great knowledge. I just got taken to school.
I have a p320 fcu that where the sear and safety is there’s a spring in it that isn’t in the gold aftermarket fcu what is the spring because that fcu has such a nice trigger
I think this video explain perfectly why the p320 would drop Fire pre upgrade. That internal safety and battery disconnect operation now makes them functionally safe now.
@Paul Smith, yes, although the problem was pretty specific in its parameters and therefore wouldn’t be a common thing, the trigger, and OOB disconnect are probably the best things to alleviate the issue. Thanks for watching!
This is a great overview - a bit behind in getting a p320 (sorry live in Commiefornia) and after getting one, been impressed with the firearm. However folks are quick to judge it citing the old drop fire issues and the reports that LEOs having AD/ND. Having an engineering background myself, this review keeps me confident in the safety. Just sad that there’s a lot of bad info out there. Wonder if anyone has data on if those ADs reported by LEOs were pre-upgrade FCUs?
I have to be honest, my previous request for you to compare operational similarities between the P320 & P365 were completely for personal vindication… I was in a deep debate with someone on one of your videos about the P365 having basically the same mechanics. Mainly about the striker safety lever setups. They’re basically the same except one is built into the striker itself and the other is a stand alone. Otherwise, they work the same exact way. Even the sear engagement with the striker and how it’s reset and released. Anyway, again… great work
Yeah I noticed. I believe he started to debate everybody on every video too. I'll never remove any comments so long as it's a civil debate regardless of my opinion. However, I don't want to see it lean towards harassment...Anyway, I definitely have to start something with the 365 soon. I appreciate your sticking with the channel, glad to have you here! and thank you for the kind words.
Thank you learned a lot excellent video.
@soulofstone Thanks! Glad it helped!
It seems I can't spell or use proper grammar either. Thank you for the video .
All I know is I took advantage of the upgrade and am glad I did. I have no idea, As I know for fact some people did not bother. One person said "If it is good enough for Sig it is good enough for me" I think it is foolish not to take advantage, as at leat one person was killed alot of property damage, and this finally got attention as a Police oficer was injured. The great thing about Sig is lifetime warranty even if sold the new owner is covered.
I have an upgraded and a non- upgrade FCU. I carry the original with full confidence. I personally feel the drop issue was overblown. The 320 is an excellent weapon regardless of which FCU you have. Can't beat the modularity. I've written a few articles on this fine weapon. I'm a 1911 guy first and foremost.
@Greg Chabot. I hear you there. The only thing I’ll mention to this is that Sig Sauer had come out and said that by swapping out the heavy trigger to the lightened version (with zero other changes), the problem is solved.
So if anything I would consider adding a lighter trigger to be in line with their professional opinion. Other than that I’m inclined to agree fully. I would definitely like to read your articles if you’ll share them with us. Drop a link/comment or email me at sigmechanics@gmail.com
Anyway, thanks for watching and taking the time to comment!
I would upgrade your trigger given how “Murphy” can strike. I’d hate to be the guy who had something unusual happen where the gun gets dropped and lands at that angle and kills an innocent child or other innocent bystander all because I wouldn’t do the FREE upgrade. Really no (good) reason not to upgrade your trigger/FCU.
I fully encourage you to appendix carry then. Especially the original.
@@jameylane1591 I do everyday nothing to be afraid of sir.
Videos still coming out that sigs firing on there own
I purchased a new M-18 about 3 years ago. After your great breakdown, it confirmed that I do have the upgraded version. Thank you!
Since that time i purchased a Canik Mete SFX. I must say that it seems to be a far better made gun. The trigger mechanism itself is worlds better and I am FAR more accurate with it. Everything functions very smooth and no slop. Not so for the M-18. I would trust the Canik over this Sig any day.
I am unable to pull the M-18 trigger without a slight barrel drop. With the Canik, I get absolutely no movement. I can readily get all shots within a 2-3-inch circle at 40 feet. I'm lucky to get one shot within a 4-inch circle with the M-18. I have no idea how this gun could/should get a military contract. That said, I have ordered the skeletonized advanced trigger in hopes that it helps.
I REALLY want to like my Sig M-18!
Yikes! That’s a big difference. It could be that you just shoot better with the Canik, however, there should be no drop with a trigger pull on a loaded P320 (you will have significant slide movement with no magazine).
Getting the skeletonized trigger will improve the overall feel of the pull but would not make impacts to the other things you mentioned.
@@SIGMECHANICS Wow!, that was a quick response! Yes, I was really thinking that 'I couldn't hit the broad side of a barn'...as the saying goes. I had a friend that shoots a LOT, tell me it was likely the gun/trigger. I read a lot about the Canik's and the great triggers and gave it a go. Happy I did. But still hoping to get my M-18 to work for me.
I still have the OG 320 and never once had an issue
One of the biggest reasons the Sig and the S&W M&P will fire quicker and accidentally is because the are basically “Single Action”. The firing pin is cocked back under spring pressure. Once you touch the trigger, with very little pull and travel distance the firing pin is released forward. As compared to Glock style trigger safety on various other manufacturers, the trigger will not allow the firing pin to be released so quickly and also specifically the Glock, it’s a “Double Action” gun, the firing pin is set forward. You would have to release the Trigger safety and then pull the trigger back enough to cock the firing pin. This is one reason the triggers on Sig and M&P are lighter and quicker because of the reduced safety and travel distance. Something to keep in mind when you carry and fire these different guns.
Great presentation. Very informative. I will stick with my Glocks.
you know both of those guns do the same thing as glocks right?
@@tedundercarriage8183 What do you mean by "do the same thing"? As far as I can tell both the sig and m&p strikers are fully cocked after the slide cycles.
@@dbz5808 that's not the case with m&p 2.0, can't say for new sigs since they have changed so much
@@tedundercarriage8183 The m&p 2.0 two piece sear seams to just drop straight down like the old one. Besides glock (and obviously including the numerous glock clones), no other striker fired pistols I know of use the trigger pull to cock (or more accurately, finish cocking) the striker.
I guess we could argue over exactly what constitutes something being a "glock clone", but I think you probably get the gist of my meaning.
Appreciate professional reviews on facts of design on this gun cause a lot of misinformation out there.
@Douglas Philips. I appreciate your vote of confidence! My intention is to provide information purely on the merit of what I see rather than speculate on my own thoughts (or popular opinion). I enjoy breaking down the "science" much more anyway, the mechanical aspect of guns fascinate me, so simple yet so full of engineering feats.
Anyway, I'm glad you enjoyed the videos. Thanks for watching!
My upgrade made the gun almost unfunctional, the parts were so tight. Sig's "suggestion" was shoot until it works right.
It would fail to go into battery 90% of the time as the slide kept braking on the disconnector. The second time it was sent back to the wrong address as the person in charge of shipping keyed the wrong zip code it and sent in off into the hood somewhere according to my tracking.
@The Owl Guy, what the heck! That’s terrible and not at all normal operation. Sorry to hear that. I also hate to think there’s someone out there with a gun that’s not theirs. Especially if they choose not to report it, that’s the kind of person who lacks character.
❤...EXCELENT PRESENTATION !!! BRAVO !!! I have a technical question a little bit off the topic of this clip, but related to Sig Sauer P320 gunsmithing. I'm wondering if you know the exact dimensions of the Sig Sauer P320 xten ejector ? I intend to modify a regular P320 9mm fcu into an xten fcu. I know it has to be modified in order to fit larger size magazines and i know how to do it, but i don't known the xten ejector dimensions. THANK YOU KINDLY!!!
I have an X-Ten that I was looking to make a video for this exact thing, I just haven’t gotten around to it yet unfortunately. Off hand I don’t have that info.
Outstanding video,.... thanks for doing that. Just purchased a P320 and it has NOT had the upgrade yet. Do you recommend the upgrade, and if so,... are the assemblies changed, or just the parts outlined in your video combined with the original parts? That question brings up the serial number,... if the entire unit is changed they would have to re-engrave the users serial into the replacement part... How does Sig handle the serial number on the part? thanks again for a very well made video!...
I definitely would recommend upgrading. They will essentially use your existing FCU and put in some new parts. There is nothing to worry about in regards to serial number that will not change.
I’ve got a question, asking for an opinion… currently have the Wilson Combat grip frame on my Sig M17. I’m conflicted about buying the AXG grip frame… anyone using it and with opinion of whether it’s a worthwhile upgrade???
You will love it
Ohhhhh I see it now in this video well heck yeah thanks man
Glad to be of service! How’s your 2011 projects coming along?
@@SIGMECHANICS so the trigger job I did with filing the sear helped as u described instead of wielding those 2 contact spots I got an armory craft adjustable trigger and man it’s way nicer. Then I used the gold trigger for the before mentioned preupgraded fcu to get the curved trigger out and that is now my favorite pistol so go figure lol. I can’t thank u enough. I’m working on a 365 now aswell that trigger needs just some take up adjustments so video ideas but I’m focusing on a aftermarket lower and comp first should have a video this week Skips Gunz if ur interested
Sounds awesome, I’ll check it out.
Also, if you installed the skeletonized trigger, those are VERY nice out of the box. They make a huge difference just with that geometry alone.
Glad it all worked out for you!
Can you make a video explaining why my m18 slide hangs up if i pull it back slow about a 1/4 inch. Only does it some times and mainly when I pull the trigger during dryfire and am trying to look at the reset. Never had any pistol do that. Shoots fine but it has me concerned. I have 600 rounds through it and it still does it. Thanks
I can’t be sure without seeing it but, If you’re only racking it 1/4” it may not be fully engaging the “main” sear ledge and therefore the striker is hooking into the “backup” ledge. It results in a weaker feel to the trigger and may be the problem. If you watch the video on P320 safety mechanisms, I do a little more exploration into the sear in that sense.
Hopefully this helps. Thanks for watching!
Is there more detail you can give on the pre sig safety lever spring installation? I and would really appreciate your time and effort. Cannot find any info on this matter.
I don’t but you can always email me at sigmechanics@gmail.com and I can try to help you or answer any questions you have.
What are your thoughts about the safety lock tabs “positive contact surface” deformation causing uncommanded discharges?
@peter villani, I'm actually working on something to answer this question! I'll post the video early next week (I think/hope). Once it drops let me know your thoughts. Thanks (again) for watching!
Sig Sauer P320 xfive legion is the same assembly as in your video?
I have xfive legion. Having problem with the trigger travel.
I hope you can help me finding the right trigger assembly for my xfive. Thanks in advance.
All 320s are generally the same. The factory trigger in the legions is the skeletonized trigger.
I have a p320 rx made in jan 2018 it looks like post-upgrade but one part internally in the slide is different specifically the part that is right below the striker hole, could you please help to understand if this cause another issues
I can certainly try. Send me a picture to sigmechanics@gmail.com, so I can see.
Great presentation, one would think that these modifications would have fixed the issues especially since they appeared to addressed all aspects of the Trigger, Sear, disconnector and striker but I believe that a few people & companies still say there are issues with drop firings. Great video and your attention to detail is perfect.
Thank you! The current claims are not about drop firing, instead they say the gun fires un-commanded. Though I should add that there’s no evidence for that like there was for the drop fire issue in 2017.
at 3:41 you show how pulling the trigger causes the sear to move downward. I just removed my upgraded FCU and pulling the trigger does not move the sear at all!! Am I doing something wrong or any ideas why this is?? Thank you
Move your slide catch up to release the takedown lever bar (black bar) and you will be able to move it.
I was hoping you’d describe the original trigger reset more, specifically the “double click” and how if the the trigger was pulled enough to fire, but not past the second “click,” it would result in a dead trigger.
Hi, @neelandbob. Are you talking about the pre-upgrade? If yes, then the double click is just the break and reset. I’m not aware of a double click that occurs in between those stages. However, maybe I’m not understanding what you’re saying correctly. Anyway, thanks for watching!
Yes, on some pistols, tolerances apparently made it so that it was possible to pull the trigger far enough to fire, but stop rearward travel before it hit the reset. Mine was one of them apparently. The upgrade obviously changed how the pistol resets, but the original double-click design had potential to result in failures. ua-cam.com/video/kPfzvIswywY/v-deo.html
@neelandbob, thanks for sharing that! That is super interesting. I’ll take some time to think about what caused it. Unfortunately Sig had altered the design of the sear housing so many times, who knows if I have the same one in the affected guns.
Glad I found this video. While replacing a broken trigger bar on my post-upgrade FCU, I noted the extra spring protruding from what I now understand to be the striker safety lever. Is the post upgrade striker safety supposed to be able to function with and without the spring? Mine was "upgraded" within the first month of the voluntary upgrade program, for what it's worth.
If you are talking about the smal spring that used to be right next to the safety lever in the FCU, then yes, it has been removed and replaced with the “captured” safety lever.
@@SIGMECHANICS Interesting. Perhaps I have an anomaly of a FCU or an early iteration of the upgrade with the minuscule difference of the spring and the captured safety lever. I've confirmed it's the new safety lever by noting the additional leg that sits toward the back of the FCU.
You’re not the first person to tell me this. I suppose at some point they might have sent them out that way from the factory.
Has this upgrade been dropped tested with the barrel face up and edger facing downwards? Like so of the failed drop test videos out there with consistent misfires?
After the news about the drop safety came out in 2017, plenty of test videos came out from various people who found the issue wasn’t repeatable anymore. The details of how the tests were done however and what they looked for I’m not entirely sure.
With all of this information in mind, would you recommend buying one? I found an optics ready full size with night sights for a great price and I'm just about convinced that they're good to go after the upgrade.
I absolutely would. Sometimes sellers might not even realize the upgrade is a thing and miss out on a free “refresh” of their P320!
I've been on the fence on getting a P320, but researching and seeing a breakdown of all of its safety mechanisms helps to abate those concerns. The biggest one for me was the redesign of the sear and disconnect. Breaking down my p365, I noticed a similar design. Now whether to get a p320 with or without the manual safety!
On the manual safety note, does it merely block the downward movement of the sear only? Thanks!
I'd personally prefer one with a manual safety, but it's difficult to find without getting the m17 or m18
@@4xdblack I picked one up with the manual safety. Only because I could choose to delete it later on if i like. You can find one with the manual safety, but only the Massachusetts compliant model
@4xdblack... Stay tuned ;)
It's interesting. I bought a sig x5 before the legion came out so I think it was 2019. I don't need to have the upgrade done because the slide already had the cut and the disconnect bar is present. But my sear and trigger bar look like pre upgrade parts.
Hey @Jacob Bauer, That’s weird, send me a pic to sigmechanics@gmail.com
I have one of the original p320 carry pre-ugrade ones. Recently I wanted a red dot so I ordered a slide with a Romeo red dot already on it from sig sauer. So my fcu is pre-upgrade but my slide is post upgrade. Idk if that's why yours is like that but this is the reason mine is.
I have the Wilson combat WCP320. Does mine have all the most recent upgrades?
If it was manufactured after 2017 then yes.
lol videos still showing up even though sig did this upgrade sig 320 are not safe got rid of mine got something else too carry
Did it ever cross your mind that these videos you see show non-upgraded firearms? It was voluntary and I doubt many law enforcement departments would remove service weapons for repair with no spare inventory to keep officers armed.
How does an owner know if they have an old or upgraded unit?
In any cast great video.
If you have a disconnector and a notch on your slide for the disconnector, then it’s upgraded.
Thanks for your great video! I feel much more comfortable with the safety and function of my P320XC. I knew that I had the upgraded version of the gun. But, I still went to the sig sight before and after purchase. The thing I did not know is that the trigger on the X series was not changed! I verified this by reading the FAQs. Do you know why this is?
Thank you! Before I answer, can you clarify what you mean by “not changed”, there should be a lightened version of a trigger.
@@SIGMECHANICS Thanks for the quick response! From the Sig Sauer FAQs "Will this affect the X-series P320s?
Yes. However, the X-series flat trigger will not be replaced." so I take this to mean that the trigger was not changed and in fact my trigger is the flat face trigger.
I see. I believe they mean that the x-series does not require a change because it already had the newer trigger.
@@SIGMECHANICS Well that makes sense however the trigger on my gun looks nothing like the trigger they show in their drawing. Perhaps Sig used an improved lighter flat face trigger on the x-series guns. Either way the other changes they made to the striker assembly and mechanical disconnect among others that you covered in the video enhance the safety and functionality of the gun and I am quite comfortable with the gun. I will continue to look into the trigger question and let you know if I find anything out. Thanks for your time and the video I learned a lot and I have subscribed so I am looking forward to more.
P.S. Did you send that FCU out to get polished or do it yourself? It must be a lot easier to clean.
Yes, I did polish it myself. I’ve been trying to get a video out on this but there’s many projects on the go. It’s coming though!
Send me a picture of the trigger and I can check it out. sigmechanics@gmail.com
I purchased my P320 M18 in 2022. Can you advise how i csn tell or find out if i have an upgraded drop safety version?
Check for a disconnector and notch in the slide.
@@SIGMECHANICS ok thanks do much appreciate it
I have a pre-upgrade model that has substantial vertical movement in the slide during trigger pull. The sear won't release the striker when dry firing unless I grab the slide and lift it upward. It never shoots its last round because it needs the upward spring pressure of a round in the mag to keep the trigger functional. I ordered the newer version sear group assembly to see if it makes a difference with this issue.
@Max Weber, that’s odd. Does it only operates if you hold the slide or is that symptom intermittent? If you remove the trigger stop pin, to allow the trigger to travel further back, does it then fire? It could also benefit to lightly polish the sear and striker “hook” to eliminate some friction.
@@SIGMECHANICS That's correct, the sear only releases the striker when I pull the slide upward, or there is a round in the mag pushing the slide upward via spring pressure from the magazine. I would say 99% of the time fails to release the striker. I tried to polish it like you mentioned, but the amount of vertical movement required for the sear to release the striker is too much travel for the sear to overcome. I suspect the new shallower sear could help with this as you mentioned in your video. I haven't tried removing the trigger stop pin. If allowing the trigger to move further back will increase the vertical travel of the sear, then I bet it would release the striker. There could be some tolerance stackup happening since I'm using an X5 grip module with an RX slide and apex trigger. I'll report back if the sear housing assembly swap fixes this issue. Thanks for this video by the way, it's really helping me narrow down this issue as I've had this pistol just sitting in my safe for 4 years.
@@SIGMECHANICS I Installed the new version sear group assembly and everything functions normally now! The change in sear depth must have made the difference.
@Max Weber, I’m glad to hear it! Do you happen to know the ledge height of the old one? I’m curious if it’s different from most pre-upgrade sears (bad batch maybe?)
@@SIGMECHANICS 2.18mm
I’m looking at buying the p320 rxp xcompact. I am assuming all of these upgrades have been implemented in the complete line of the 320 family. My question is, are all of the ADs that people are saying from older models or is it a new issue?
Yes. All upgrades are going to be included in the RXP. The ADs that are being mentioned recently are a newer claim that unlike the drop safety problem, is not something that can be replicated under “lab conditions”. Therefore, I take that with a grain of salt as I also do not believe they are occurring without a trigger pull.