P320 - SECRETS OF THE APEX FORWARD SET TRIGGER BAR

In this video I take an in depth look at the Apex Forward Set Trigger Bar for the P320 and use Apex's own US patent as a reference to explore exactly what Apex did with the trigger bar in order for it to achieve its performance outcome over a stock factory trigger bar.
Furthermore, I provide detailed explanations on WHY certain parts of the trigger bar work the way they do, as well as provide insight on some unexpected findings. ENJOY!
PATENT LINK: patents.google.com/patent/US10378847B2/en
0:00 - INTRO
1:16 - PART DESCRIPTION
2:35 - APEX v. FACTORY WALK-AROUND
3:30 - LENGTH & HEIGHT COMPARISON
4:56 - TESTING SETUP OVERVIEW
SIG FACTORY TRIGGER BAR TESTING
5:47 - TRIGGER TRAVEL
5:59 - TAKE-UP
6:06 - TRIGGER TRAVEL TO BREAK
6:19 - RESET
6:27 - PULL WEIGHT
APEX FACTORY TRIGGER BAR TESTING
6:48 - TRIGGER TRAVEL
7:00 - TAKE-UP
7:06 - TRIGGER TRAVEL TO BREAK
7:23 - RESET
7:32 - PULL WEIGHT
7:48 - TEST RESULT COMPARISON
7:57 - REAR ARM INTRODUCTION
8:42 - THE "FREE END" PORTION
11:16 - THE "DROP SAFETY LIFTER TAB" PORTION
14:29 - THE "CAM" PORTION
15:45 - THE OVER-TRAVEL STOP TUBE
20:11 - SUMMARY
20:47 - THANKS & ANNOUNCEMENT
21:40 - OUTRO

[@SkipsGunz]

If anyone is interested in learning ins and outs of the 320 platform this channel is a must

[@SIGMECHANICS]

Thanks!... and if anyone is interested in getting some mods made to their P320, hit up my good friend here @Skips Gunz!

[@WvMnts]

Really enjoying

[@markcurry3083]

@@SIGMECHANICS holy shit absolutely. The p320 is so complicated sometimes. Definitely super cool to learn. I had incredible trouble installing a WC p320 full dive grip module. The takedown lever is often very different to manipulate

[@thestupidn3rd558]

Subbed, about to buy/build one soon

[@milkthethrottle495]

Just got myself a M18 and I felt I learned more from this channel than I did in school 😂

[@therythymtherebel9332]

quietly turning gun fans into Mechanical Engineers/Gunsmiths one video at a time ...love it

[@The_Chad_Davis]

This is amazing. The level of detail in each facet of finction along with the supporting CAD graphics, and sheer ease of comprehension you deliver to the viewer with this video is on an entirely next level! Thank you for all the time you put into this, will be subbing and checking out all of your videos now.

[@DaCoverGuy]

you can look at the holes where the spring goes in at 2:56, the square part that sticks in the housing are offset at different lengths. that would make a difference in trigger pulls. the square part on the oem is sitting forward the hole. The apex hole is sitting dead center

[@matthewgonzalez1346]

I recently added this kit to my M18. The trigger feels a little lighter and after some dry firing a little smoother. The reset is definitely shorter. It sounds the same but is more tactile. The most noticeable difference is there is essentially no take up. You're at the wall to start. The break feels about the same as the stock trigger. Overall I do like it. But I plan to buy an FCU and do a custom 320 around it and If I go with Apex Id probably jist get the trigger. The advanced flat trigger feels really great imo.

[@tommarsh5702]

I got the whole Apex kit for my P320 and I love it much better than stock.

[@GeraldDarden]

This is the kind of thorough, detailed information that speaks to me. Love it.

[@iangreene8720]

LOVE the 3D rendering and movement. Really easy for me to understand how everything works. Awesome job!

[@SIGMECHANICS]

Thank you! Glad you found it helpful.

[@rustyshackelford7084]

As a “visual learner” these renderings you are producing help me exponentially. After owning and modifying Glocks the p 320 fcu is like alien tech to me. I love my sigs, they shoot amazing but they gave me a new found appreciation for Glock simplicity.

[@SIGMECHANICS]

Hey, that seems like a win for the 2A community one way or another!

[@shootinbruin3614]

You're a blessing to the community man. If I may make a humble suggestion: perhaps make a fixture to actuate the trigger using a screw? Turning a screw to push the trigger back is potentially more precise than using one's finger since you can stop the screw as soon as the trigger breaks / resets. Thanks again for all your work!

[@SIGMECHANICS]

Thank you @Shootin' Bruin. Wow, that is an excellent suggestion and I will work on a way to incorporate that for future testing. I was already working on a new custom testing rig for you guys, so this is a great opportunity to implement some fine tuning capabilities. Thanks for watching!

[@shootinbruin3614]

@@SIGMECHANICS Glad you like my suggestion! Appreciate all you do!

[@dt8694]

I think armory craft or tyrant or another aftermarket trigger uses a screw adjustment as well

[@pew_stuff]

You read my mind! I JUST installed an Apex forward set trigger bar and I was trying to figure out what design changes they made to virtually eliminate trigger pretravel. Your video explains it perfectly! The Apex trigger bar is actually a safe option for folks who want to eliminate pretravel. I purchased my 320 used and the previous owner had it set up with the OEM trigger bar and the Armory Craft adjustable trigger. He dialed out all of the pretravel where the trigger sat on the wall at rest. Obviously this completely disables the striker safety so I was looking for options that would allow me to eliminate pretravel and maintain the drop/striker safety. I'm happy with the results of the Apex trigger bar. I eliminated pretravel and maintained the drop safety features. I also have the Gray Guns sear and sear springs installed so i get a pretty crisp trigger that breaks at 2.25 lbs.

[@SIGMECHANICS]

@Stuff, that’s what I’m here for! I was just playing around with the Apex / AC combo today, good choice if you know what you’re doing. I also found an interesting bit of information… the striker will push the sear down a bit when it “hooks” the sear. So, even when I took out ALL the take up, once I installed the FCU and racked the slide I would have .3” take up at the trigger! It’s a lot of fun to figure all this out. Anyway, I’m glad you enjoyed the video, stay tuned! Lots more coming.

[@sms9106]

What a detailed and coherent explanation, very fascinating.

[@geraldcook1043]

I can’t say enough about how useful and informative this video is. Fantastic. Thank you!

[@crherniman]

Just found this channel and absolutely love the breakdown and modeling of all the mechanics. Definitely subscribing

[@SIGMECHANICS]

Thanks! Glad to have you here with us.

[@jhauser203]

Just bought a p320 and find your information invaluable. Thank you.

[@f2f.photography]

Absolutely incredible. I'd love to see other aspects of the P320 explained in this way! Bravo.

[@f2f.photography]

Where can I get buy that giant "sig puck"?

[@SIGMECHANICS]

I had a friend 3D print it for me some time ago. Quite a few people have asked me about it, so maybe I’ll make them eventually.

[@yamaterailgun6845]

I'm a relatively new subscriber as I just recently got a P320 (M18) of my own, but I'm so glad to have found your channel. Your videos have been very clear and informative, and I love learning more! Funny enough, I actually have one of these arriving today, so it looks like I have some more testing to go through for what works for me! Thank you so much!

[@SIGMECHANICS]

Welcome to the community! Glad to have you here @YamateRailgun. I'm happy to hear the videos are helping you learn about your gun! Keep in mind my test was using a stock curved trigger to results may vary, but realistically, you won't have any problems. If you have any questions about your P320, feel free to connect with me at [e-mail]

[@v.german11b]

Extraordinary well explained visual information, very much appreciated! 👏🏼👏🏼👏🏼👏🏼 I am glad Sig Sauer is giving you the recognition and support that you deserve 👏🏼👏🏼👏🏼👏🏼

[@DaCoverGuy]

you can look at the holes where the spring goes in at 2:56, the square part that sticks in the housing are offset at different lengths. that would make a difference in trigger pulls. the square part on the oem is sitting forward the hole. The apex hole is sitting dead center.

[@RickheadWashington]

Wow, that a lot of interesting information. Great job. Thank you

[@eugeneasher3788]

I have the Apex trigger system in 2 of my p320 and I'll have to say I know a lot more now than I did , thanks for another absolutely awesome video 🙏

[@SIGMECHANICS]

The Apex is great and the folks at Apex are also awesome. I don’t usually tune my personal guns, but I would trust the apex over an adjustable trigger any day.

[@drd1924]

You deliver a very clear and enjoyable explanation. Thank You! Not a lot of Umm's or repeating yourself 3 times to get a point across like some others do.

[@SIGMECHANICS]

Thank you for the kind words and thank you again for watching!

[@pitchandlimb]

Excellent video! Love the controlled jigs for demonstration and diagnosis via destructive reverse engineering.

[@SIGMECHANICS]

Thanks!

[@wtfmrkratos]

Absolutely the most underrated video I’ve ever seen. Phenomenal information and presentation

[@mebyard1]

Love your videos and graphics. AMAZING GRAPHICS!

[@johnstewart2011]

Another fascinating and very informative explanation of the P320 mechanism. Thanks as always.

[@SIGMECHANICS]

Hey there @John Stewart! Good to see you, thanks!

[@Pozzer528]

This has to be the best explanation video I have ever seen. Outstanding job !!! You just got a subscriber!!

[@SIGMECHANICS]

Thank you! That’s very kind of you to say.

[@lovermeindustries]

Great video. Watched it again, and the details are so perfect from an academic perspective. Love the 3D renderings.

[@SIGMECHANICS]

Thank you!

[@coleenvecellio8180]

I really enjoy your channel and video content. I am just beginning to explore modifications to my P320. As someone who has never customized a pistol, your videos are a guiding force that is facilitating my upgrades and customizations. Thank you!

[@SIGMECHANICS]

It’s always a pleasure to hear that the videos are helping people understand and get comfortable with their pistols! Thanks!

[@kennethreynolds8]

Fantastic presentation and quite detailed.

[@designated_hitter_EGA]

Thanks again for sharing you hard work. Including the cad graphics is very helpful getting a good visual understanding. Again, much appreciated!

[@SIGMECHANICS]

You're very welcome!

[@Sandmanthesniper]

Great work I just found this video I find your scientific approach very helpful!! Thanks for putting in the work

[@SIGMECHANICS]

Thank you!

[@georgefrompa]

Love it... for months i was trying to figure out what the difference was. Now I know

[@SIGMECHANICS]

@George Rodriguez, When I got the Apex TB I had the same feeling, I just had to know what made it work!

[@ronmartblog]

This video gave me a hunch as to why some P320s have a sting sensation when firing. My guess is that it’s caused by a larger gap between the rear of the trigger bar and the frame near where the seer is located. This gap is caused by a weak or damaged rear spring used to attach the trigger bar I don’t have my M18 anymore so I can’t test it out, but that stood out to me as a difference

[@Dragunfyer83]

Thank you for spending your time doing these videos. They are helpful!

[@SIGMECHANICS]

Glad you like them @Dragunfyer83! It's my pleasure, even with the time it takes to make them, it's rewarding when people think or find them useful/helpful! Thanks for watching.

[@robertkleiman1502]

Great video. I’m also learning the 320. I’ll be purchasing one soon. What a great resource you are!

[@SIGMECHANICS]

Thank you! Glad to be have been helpful.

[@richardharris5819]

Some really great stuff, I'm Loving all the knowledge sharing:)

[@SIGMECHANICS]

Glad to hear it! @Richard Harris. Definitely more to come!

[@jasongraun3122]

Amazing video! Thank you for all the work! I just bought a 320, I learned a ton from the video.

[@SIGMECHANICS]

Hey! Thank you. I’m glad you found it helpful. The 320 is a great platform, let me know if you have any questions.

[@HuntMountain06]

Incredible breakdown. Nice job.

[@SIGMECHANICS]

Thank you!

[@robkearbey6522]

Outstanding Review and articulate explanations.

[@Tito_Soto]

I'm so geeking out with this awesome breakdown and beautiful presentation 🤯

[@SIGMECHANICS]

Thank you! I’m so happy to hear it. Wait until you see what I’m working on for the next video.

[@Tito_Soto]

@@SIGMECHANICS with they way you execute your videos, I can hardly wait! As always, thank you for all do and share!

[@YouBoyJpres]

Man nice work!! You are definitely taking this to another level ✊🏽💪🏽💯

[@SIGMECHANICS]

Thank you!

[@hopewilliams6705]

This is an amazingly well put together video

[@SIGMECHANICS]

Hey @Hope Williams! Thanks!

[@hopewilliams6705]

@@SIGMECHANICS no problem I truly enjoy your contribution to the community and the the level of information is unparalleled!

[@Ajibica117]

Holy shit thank you this is everything I’ve wanted and more. I. I… I think I’m in love. WITH DATA!!

[@SIGMECHANICS]

Best comment I’ve gotten so far! Glad you feel that way! I think you’ll love the next video.

[@bjharada]

Love the information you provide. It really increases my understanding of how the FCU works. I just wish you would re-introduce the videos you created for the P365 FCU awhile ago. This is where all my concentration is now. Trying to get the P365 FCU to be better tuned.

[@SIGMECHANICS]

I am actually currently working on the P365 FCU. Of course I am also trying to complete the 3-D model for all the parts and components. The plan right now would be to start making videos for general help and support and then get into those flagship videos that go into high detail. I got a few projects on the go, but it should start trickling in soon .

[@bjharada]

@@SIGMECHANICS That would be fantastic. I love your 3-D modeling as it really explains how all the parts work in concert. Please keep up the great work.

[@CaffeineFreak13]

Glad to have found this channel. I got my wife an 365X-Macro and i got my self the p320 spectre comp so im trying to figure out how to remove that sig creep and take-up that they all have. The custom shop fcu isnt as bad but still has some creep and i want a solid wall before it breaks

[@SIGMECHANICS]

Take up is relatively easy to remove, however, removing too much may interfere with the safety lever. Creep on the other hand is a little harder to remove since the sear and striker have a almost fixed amount. A good trigger can resolve this somewhat. I have a video coming soon. That will be helpful on this topic.

[@gunjack66]

Thank you for the video! Very professional! The added trigger pull weight with the Apex is interesting…

[@SIGMECHANICS]

@gunjack661, to be fair, Apex does note that trigger weight is increased. Where exactly it comes from, I'm not sure because of the point I made about the trigger bar through hole being different from the OEM TB. That must definitely impact things, I have some Ideas but I need to test further first.

[@Anchor7]

@@SIGMECHANICS First off great video, thanks. Doesn't Apex say pull weight is reduced 30%?

[@wvultra]

Thanks for another excellent, detailed video my Friend! Keep up the great work! 👍

[@SIGMECHANICS]

Thanks, will do! By the way I got in touch with the SA, big things coming I think. Thanks for sending me the contact info!

[@wvultra]

@@SIGMECHANICS My pleasure! Please keep me in the loop! 😉😎

[@smittyinfo]

That was awesome! Well done! ✌️

[@Rickmaki]

I can't believe how awesome this video is.. Great Video !!!!

[@SIGMECHANICS]

Thank you! Thanks for watching!

[@xxstr8jacketxx]

You help me understand this stuff so much thank you sir 😌

[@SIGMECHANICS]

Glad to hear that! @Vapor Trail.

[@Cmoth040]

Awesome work. I have had the original version of the over-travel kit from Apex in my M17 for a while now. I do prefer the feel of the trigger but didn't really want to remove the thumb-safety. I recently ordered the new model over-travel bar and will be swapping it out so I can re-install my thumb safety. Thank you for the analysis of the part.

[@鄭文-o2b]

Thank you for doing thorough tests with gauges so we can quantify the difference instead of qualitative/subjective feel. I just installed this trigger and I found it to be an improvement on stock in terms of it being lighter and slightly more crisp, but there's still quite a bit of play and creep compared to my PPQ. Better than stock, not as good as walther triggers yet tho.

[@JWbabyshark]

Great detailed video. This must took you a long time to put together.

[@SIGMECHANICS]

Thank you. Yes, on average about an hour or more per minute of footage if you can believe it! Thanks for watching!

[@orlandonarvaez1]

This research and cad design would've taken me 33 years to make. Great job. I wish you would've mentioned or explored why the apex system came back with a heavier pull than stock.

[@SIGMECHANICS]

It did take a while, but I enjoyed the process. The pull weight is due to the geometry of the goose neck placement. It would be hard to show.

[@orlandonarvaez1]

@@SIGMECHANICS if one of my goals is to get a lighter pull, then this would not be a good system for my pistol, right?

[@jcc6356]

Does the Apex trigger system improves safer if the P320? Thank you for your video, amazing!!!

[@SIGMECHANICS]

Thank you! Really, it will make no change to the safety in the P320, but the improvements I talk about are tangible and lots of people like the Apex system.

[@dougtak39]

Looks great without the trigger guard. I think that'll be my next upgrade.

[@andreadileo6267]

Your work Is Amazing man! I enjoy this video

[@SIGMECHANICS]

Thank you!

[@Spidey_Ethan]

I don’t even own a Sig, but this was so interesting!

[@SIGMECHANICS]

Thanks!

[@bimmer666]

Man, your videos are gold !

[@SIGMECHANICS]

@bimmer666, thank you! Let me know if there is anything you’d be interested in learning about.

[@bimmer666]

@@SIGMECHANICS Thanks man! I´m curious about the question if there is a possibility to minimize the frame to FCU wiggle. Maybe by bending the fcu´s rails up a bit. :) That´s what i thought about.

[@tim365]

Fantastic videos

[@daftpanda6533]

Great video! Ive always wanted to learn how the various parts of the fcu work and where they can be optimized. I'm a mechanic and machinist by trade and love the exploded autocad views. I've been interested in the engineering of tings ever since I was a kid. Definitely subbed for more of your content! That said, would it be ok (safety wise) to just install the stop tube by itself? I'd like to tighten up the trigger assy without permanently modifying anything. I have a 320 x compact with the straight trigger- it's pretty great to shoot stock, but the take up and reset could be tightened up a bit. It's difficult to determine the over travel- seems like the trigger hits the stop right after the break when dry firing it- or at least its difficult to determine how much over travel there is with the gun disassembled. Going to go watch your video on different sig triggers now, perhaps that will have the answers.

[@SIGMECHANICS]

Yes! The stop tube works wonders on its own. Alternatively you have the option to go with a trigger with an over travel stop screw (Grayguns makes one for example), both will produce similar changes but the trigger will give you options as to how far your stop is. Thank for watching!

[@louisschneider4683]

Awesome detail

[@sl9902]

Another great video! Your a Genius! Keep it up budd.

[@SIGMECHANICS]

Thanks @S L, will do!

[@markanderson1088]

Wow. What an awesome channel. Subscribed.

[@SIGMECHANICS]

Thank you! Glad to have you here.

[@MrTylero28]

Such a great channel. Thank you for your time and detail. Have you got any advice for those of us who are using the sig custom works fcu? Would the apex bar and overtravel tube help that particular setup?

[@SIGMECHANICS]

Your welcome, and thanks you for watching! The Custom Works FCU is actually no different from the standard FCU with exception of course, that the coating is different. Therefore, the Apex trigger bar kit will function the same in either FCU configuration.

[@alexanderportnoff2834]

Your videos are amazing!

[@SIGMECHANICS]

@Alexander Portnoff, thank you!

[@garyc2972]

Great video but i found the Apex trigger to reduce trigger pull weight not increase it in the p320

[@bsing9992]

What barrel is in the Sig slide at the end of your video? And I enjoyed the Apex breakdown... It's on the shopping list.

[@SIGMECHANICS]

That’s the Barsto Gunsmith fit barrel, when I get time I will be doing a video on fitting the barrel, but if you don’t want to go that far…It also comes as a drop in option too! Give Irv Stone a call, he’s a great guy and can help you find what you need.

[@mazurmotors4869]

Congratulations on a great and wise video, I have a question, three weeks ago the new Siga P320 XCompact, production March 2022, it is a model with a straight trigger and I have the number 576 embossed on the factory trigger bar, or importing the complete Apex trigger bar shown in your video to Poland will also improve the work on this SIG Sauer model of mine? Best regards and thank you in advance for your answer.

[@SIGMECHANICS]

“576” is only a marking to know which factory the part was made. It doesn’t indicate date of production. You will have no problem using the factory trigger with the Apex trigger bar.

[@douglasreagan4979]

Well done! You are creating the science that will someday be used to make this gun a viable "NRA/CMP Bullseye Competition" gun.

[@sbchug2484]

Fantastic!!

[@mazurmotors4869]

Perfect !

[@mlevsky]

can you do a video on the greyguns seer kit? i liked that a lot more than my apex trigger bar.

[@SIGMECHANICS]

I can and I will. They just sent one over recently and I just need to squeeze it into the production schedule.

[@vongillman]

ur the best !! Thx so much !!

[@capoeiradude35]

My p320 apex trigger feels like it has a slugging reset that slows my cadence. Should i make sure that forward set tube is in the right place? Great vid, btw.

[@SIGMECHANICS]

It’s slightly possible the trigger stop is hitting the spring and not the tube. That would be my first thing to check.

[@Hispeed1]

Nice. I love mine

[@kzyt87]

wow lots stuff to learn

[@pro2amatt846]

Awesome!!!!!!

[@theadventuresofvm8711]

Amazing video thank you

[@SIGMECHANICS]

Thank you!

[@theadventuresofvm8711]

@@SIGMECHANICS I was thinking of getting the M18 but have concerns with sigsauer drop tests and accidental discharge. What are your thoughts on that?

[@SIGMECHANICS]

Well, the drip test issue was real and Sig admitted as much, however they did fix the issue (I’ll share a link to a video I did about this below). However, you really should not worry about the drop safety issue because that is no longer an issue. I have looked into the accidental discharges pretty extensively and have tried making critical modifications to my P320 in order to try to replicate something similar to an accidental discharge. I have removed all safeties and have filed down critical infrastructure way beyond what you would have in normal wear and tear, and I still was not able to ever re-create it. I truly and honestly believe that there is no accidental discharge problem and that the things we hear are due to negligent discharges. Up until now there has not been anybody able to replicate this problem in a controlled environment (for example the safety issue was a repeatable test). All that just to say that the P320 in my opinion is very safe. And much of what you’re hearing on KZbin has more to do with getting clicks and likes due to controversy. I of course, am willing to change my opinion however, I would need evidence or proof.

[@theadventuresofvm8711]

@@SIGMECHANICS thank you so much for the info. I was going to put on my CCW but didn’t want those concerns in the back of my head. I appreciate you taking the time to reply to my question

[@SIGMECHANICS]

@theadventuresofvm8711 My pleasure, anytime. You can also reach me at [e-mail] if you ever need anything.

[@bumpa33]

WIth the work you have done on various triggers, what do you consider the best DIY trigger /trigger kit/Springs etc to install?

[@SIGMECHANICS]

I haven’t tested the triggers based on additional components, so I don’t have the data to answer that question.

[@ryanmathieu8764]

“This won’t be a review” and proceeds to give super in depth review LOL

[@SIGMECHANICS]

Ha! In a sense it was a review, however I used their own patent to point out the key presumed benefits and verified them independently. I suppose what I wanted to achieve was a lack of personal opinion (how it felt) and include as much data pertinent to the product (how it works). The funny thing was that I expected Apex to be a bit bothered by it, but in reality it allowed me to become friends with one of the owners who felt the information was presented fairly and factual. I can honestly say they are a great company with a solid team!

[@mytquin7605]

in your opinion sir, is the apex upgrade worth it in an x series P320 ?

[@SIGMECHANICS]

If you are not able to (or comfortable with) modifying your FCU internals yourself, then it is the next best option for sure! It works and there are hundreds of people who have reviewed it. Another option is through the Sig Armorer who has (or will very soon) released a kit that will include some upgrades to the trigger bar, sear and striker.

[@frankfreda8570]

Can one reproduce the effects of the apex bar using nothing but that overstep tube on a factory bar?

[@SIGMECHANICS]

Absolutely @Frank Freda. Take a look at my video called "DIY Competition Trigger Job" where I go into detail on this (surprisingly similar) modification. Thanks for watching!

[@frankfreda8570]

@@SIGMECHANICS thanks for your time and effort.

[@TommyMacTube]

I have an apex trigger, but I want a lighter spring, I hate the 3lb for this, 2lb would be great. who would you find reputable?

[@SIGMECHANICS]

I haven’t tried it with that sort of configuration so I’m not sure.

[@reyt2304]

I like my P320 just the way it is.

[@ricardocervantes7203]

Bro!! The amount of detail and effort you put into these videos blows my mind! Thanks a lot🫡🤝🏼

[@SIGMECHANICS]

Thanks!

[@419rocha]

Did you try the over travel tube with the stock trigger bar? Curious.

[@SIGMECHANICS]

I did not, just what I showed in the video here.

[@Ballistikpapa]

I am currently watching this vid. My ultimate question is, will the dual adj. Armorycraft with the apex trigger bar result in my goal...which is a shorter reset?

[@SIGMECHANICS]

The adjustable trigger would generally keep it shorter as the front leading edge of the trigger bar will be the stock one as opposed to the elongated one on the APEX.

[@ronmartblog]

did you try just installing the tube without the trigger bar to see if that’s where most of the benefits come from?

[@SIGMECHANICS]

I did! And you only get a shorter trigger travel and a shorter over-travel, the trigger really does the “heavy lifting” in so far as it reduces the most trigger travel and causes earlier sear engagement. I’ve actually used a few aluminum tubes with varying thicknesses and am able to further adjust over-travel to my P320s tolerance. The stop gushing provided is more of a one size fits all, you can actually do a bit better with trial and error.

[@ronmartblog]

@@SIGMECHANICS Cool thanks! That’s all I want from the trigger so that’s the only piece I really need

[@SIGMECHANICS]

You should then consider the GrayGuns trigger. It is very smooth and only comes with over travel stop. Here’s a recent video with more data on that (check the video description to find the Grayguns Trigger models): kzbin.info/www/bejne/qaCWk2uAja93osk

[@LoneStarRay]

If you only buy the trigger and not the trigger bar do you still get the benefits of lighter trigger pull, travel time...etc?

[@SIGMECHANICS]

No, the trigger bar is the reason the trigger pull is shorter. The actual outcome in pull weight goes up by about 1lb on average.

[@LoneStarRay]

@@SIGMECHANICS thank you!

[@houseofthewhitedog]

Dude should be selling courses

[@iToddi]

I owned a P320 AXG Scorpian. After watching your video I ordered one. However, they placed my order on hold to let me know that they have never tested their trigger bar on an AXG. What are your thoughts? Is the AXG different enough that I will not get positive results? I am looking for a shorter reset and length of pull.

[@SIGMECHANICS]

I am not sure about the trigger bar specifically, but I know that some manufacturers for triggers have found the AXG is a little different tolerance than the polymers or TXG and therefore, the triggers rub on the AXG frame which causes issues. This likely can transfer to the TB too so I can make the educated guess and say “probably” If you’re a DIYer, you can always mod the OEM trigger or even try a dual adjustable trigger.

[@iToddi]

@@SIGMECHANICSThanks for the reply. I just got a call from APEX and they said they have not tested their product in the AXG models and as such cannot say it would be safe, drop safe, fit, etc. The smart choice was to cancel the order until they have done the testing. They also said they do not know when they would get to testing the AXG models. So at this point I will look for another product to try to shorten the trigger reset.

[@genius0o07]

8 minutes: Sold. 21 minutes: I'm a sig genius now.

[@SIGMECHANICS]

Haha, i’m glad you found the video useful!

[@patrickkelly3645]

If keep the original trigger bar and only add the stop tube and spring, will I retain the lighter pull weight and still reduce my over travel?

[@SIGMECHANICS]

Yes.

[@VictorMarines06]

It seems like you would get much of the perceived benefits by simply adding the .033" over -travel stop sleeve to the stop pin without having to install the whole trigger bar.

[@VictorMarines06]

The rest of the benefit comes from the extra material on the free-end.

[@SIGMECHANICS]

Correct. Both together make the whole but independently still work with good benefits. Watch my video on DIY competition trigger job, I go into detail how to get the same outcome without the price tag.

[@jazzzpierce6283]

I want a m18 so for me to be able to get a manual saftey and do it my self to make a mimic m18 hell yea

[@SIGMECHANICS]

This video will get you closer to what your looking for: P320 MANUAL SAFETY CONVERSION (HOW-TO USE THE MSAFE-T) kzbin.info/www/bejne/sJbQophpnLKkgNU

[@Arch1301]

Subscribed ,very informative week ago bought p320 axg classic ,going to upgrade it a little )

[@SIGMECHANICS]

Thank you. Great choice! Let me know if you have any questions as your getting acquainted.

[@BJJreview]

Just installed the Apex product on a P320 M18. It's disappointing. The relative change from stock is "meh" and definitely not worth adding $140 to the cost of the gun. My bad - it's wasted money. Previously, I installed the Apex flat trigger on a PPQ (which has an amazing - famous for its performance -stock trigger) and I was impressed with the improvement of the Apex product on the PPQ. However, the Apex product on the Sig P320 is no big deal and definitely $140 wasted. Stick with the stock trigger. The Apex bar/trigger install might change the reset ever so slightly and using the cylinder push the trigger forward a bit ... "meh", "meh", "meh". Waste of money. I was looking for this product to provide a crisp break. It does not. The take-up eventually leads to firing - you never find a wall and then a break.

[@rick2k68]

I was wondering if the latest models of specter comps, 2023’s made have the same trigger bars as shown in your video. I was told these new triggers were better. That maybe, and big maybe the only thing to improve could be the over travel bushing

[@SIGMECHANICS]

I’ll have to ask if there was any changes in 2023. I don’t think there was anything significant.

[@rick2k68]

@@SIGMECHANICS would you get back with me on that?

[@rick2k68]

@@SIGMECHANICS and btw your video was super informative, so much detail in it. Thank you

[@SIGMECHANICS]

Just confirmed with the VP that no changes since 2021 when they started with the nickel finish.

[@rick2k68]

@@SIGMECHANICS excellent. Thank you

[@forgodandcountry222]

Did I make the right choice by upgrading to this trigger?

[@SIGMECHANICS]

The Apex kit has a long history of people who use it and remains one of the most used upgrades. You did good!