Posted: 7/26/2025 10:46:22 AM EDT
|
TLDR: He gets five discharges. He pinned the trigger back 1mm and wiggles the slide. SIGUSA says: "The P320 meets and exceeds all industry safety standards" and "The P320 CANNOT, under any circumstances, discharge without a trigger pull. This is verified through extensive testing by SIG SAUER, the U.S. Military, elite law enforcement agencies, and independent laboratories." Bullshit! If you own a P320 you need to watch the full video. My think, full stop. If your trigger return spring is weak. You may have a compromised gun. All of you should test your guns. The youtuber says it's a post upgrade gun with only sights being changed. If that is not a shit design I don't know what is. Non SIG P320 owners. Watch the first 11 mins. You get the full gist of what he is doing.  SIG P320 Un Commanded Discharge and its Repeatable Added video. Shows same problem. Different youtuber. 23 seconds long. Worth watching.  Failed To Load Title |
|
Quoted: TLDR: He gets five discharges. He pinned the trigger back 1mm and wiggles the slide. If that is not a shit design I don't know what is.  https://www.youtube.com/watch?v=jOMQOtOQoPkEdmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video.  P320 - STRIKER SAFETY DISENGAGEMENT PARAMETERS |
|
Quoted: That's insane! Keep in mind, it's a second or third level safety, intended to stop the gun from firing if the striker slips off the first sear ledge and then slips off the second more aggresive sear ledge, so I suppose they were just shooting for blocking the striker from passing through the breechface if the trigger was all the way forward. Although shooting for is probably a bad choice of words. |
|
Quoted: Edmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video. https://www.youtube.com/watch?v=R0MpcFEXWhc |
|
Quoted: So you have a good one. Praise GOD. Still not gonna carry it, mine is the first batch and I sent it for the upgrade. I didn't use primed cases, but it never fired moving the slide. I am not a denier, I just couldn't get mine to go off. |
|
Quoted: 0.09" is about three sheets of paper thick. Quoted: Quoted: Edmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video. https://www.youtube.com/watch?v=R0MpcFEXWhcNo, a sheet of paper is about 0.003” so 90 thou divided by 3 thou is 30 sheets of paper thick. 0.09” is 2.29 mm. |
|
Quoted: To many moving parts, not even close to PERFECTION.  Why yes, yes I went there. The one time I took my FCU apart I thought this thing is over complicated. I like the Ruger example of a FCU for a Glock vs what Sig has done. Second time Sig has got me, first time was the SIG 556, luckily I was able to sell it. Not a bad rifle just not what I thought it would be. I have survived too much crazy stuff in life to trust carrying a P320 over my trusted G19. |
|
Quoted: My guess is there is no fix, a redesign is needed. It's a epic mess they have gotten into. Quoted: Quoted: Why haven't P320's been recalled? The redesign is what the P365 has. |
|
I think the P320 is a dangerous turd, and there is probably something to do with play in the parts between the upper and lower as a contributing factor in this. He keeps emphasizing “less than a millimeter!” but in mechanical terms that’s enormous. That’s 0.039”. That’s a lot. He might have something here if he pulled the trigger to the wall, released it, and then it would go off with slide manipulation. Likewise, if he could demonstrate a somewhat consistent method of the trigger staying back at the wall after it had been released that doesn’t involve a wood screw falling up into the trigger pocket. This is an interesting observation, but I don’t think it alone explains what’s going on. |
|
Quoted: 0.09" is about three sheets of paper thick. Quoted: Quoted: Edmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video. https://www.youtube.com/watch?v=R0MpcFEXWhc9 hundredths, not 9 thousandths. |
|
Quoted: Yea The one time I took my FCU apart I thought this thing is over complicated. I like the Ruger example of a FCU for a Glock vs what Sig has done. Second time Sig has got me, first time was the SIG 556, luckily I was able to sell it. Not a bad rifle just not what I thought it would be. I have survived too much crazy stuff in life to trust carrying a P320 over my trusted G19. Amen. |
|
Quoted: 0.09" is about three sheets of paper thick. Quoted: Quoted: Edmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video. https://www.youtube.com/watch?v=R0MpcFEXWhcMore like three credit cards. Still not enough for an internal safety feature. |
|
Quoted: 9 hundredths, not 9 thousandths. Quoted: Quoted: Quoted: Edmund measured it at 0.09 inches, which is more than 2mm, but I'm guessing his measurements are a bit more accurate than the guy in OP's video. https://www.youtube.com/watch?v=R0MpcFEXWhc9 hundredths, not 9 thousandths. Right, sheet of paper about .002. |
|
Look, I think SIG needs to take action here, but defeating safeties and being surprised when it goes off does not seem like true evidence. And if anyone’s holster depresses the trigger at all allowing it to go off… who’s fault is that? Both? Seriously. If your evidence requires having to manipulate the gun to make this happen … you’re gaming it. I’ll give this a shot with mine for grins. Edit: that trigger is pulled back quite a bit and then the slide is manipulated, but since SIG says it can’t fire without a full trigger press this is bad. I just disagree with having to jury-rig the system to make it happen. |
|
Quoted: I think the P320 is a dangerous turd, and there is probably something to do with play in the parts between the upper and lower as a contributing factor in this. He keeps emphasizing “less than a millimeter!” but in mechanical terms that’s enormous. That’s 0.039”. That’s a lot. He might have something here if he pulled the trigger to the wall, released it, and then it would go off with slide manipulation. Likewise, if he could demonstrate a somewhat consistent method of the trigger staying back at the wall after it had been released that doesn’t involve a wood screw falling up into the trigger pocket. This is an interesting observation, but I don’t think it alone explains what’s going on. But! What if he has a weak trigger return spring? |
|
Quoted: Look, I think SIG needs to take action here, but defeating safeties and being surprised when it goes off does not seem like true evidence. And if anyone’s holster depresses the trigger at all allowing it to go off… who’s fault is that? Both? Seriously. If your evidence requires having to manipulate the gun to make this happen … you’re gaming it. I’ll give this a shot with mine for grins. Not if you have a weak return spring.. |
|
Quoted: I think the P320 is a dangerous turd, and there is probably something to do with play in the parts between the upper and lower as a contributing factor in this. He keeps emphasizing “less than a millimeter!” but in mechanical terms that’s enormous. That’s 0.039”. That’s a lot. He might have something here if he pulled the trigger to the wall, released it, and then it would go off with slide manipulation. Likewise, if he could demonstrate a somewhat consistent method of the trigger staying back at the wall after it had been released that doesn’t involve a wood screw falling up into the trigger pocket. This is an interesting observation, but I don’t think it alone explains what’s going on. This is where I am, too. If the trigger is pulled back 1mm, You are pulling the trigger. How is that happening with holstered weapons? |
|
Quoted: But! What if he has a weak trigger return spring? Quoted: Quoted: I think the P320 is a dangerous turd, and there is probably something to do with play in the parts between the upper and lower as a contributing factor in this. He keeps emphasizing “less than a millimeter!” but in mechanical terms that’s enormous. That’s 0.039”. That’s a lot. He might have something here if he pulled the trigger to the wall, released it, and then it would go off with slide manipulation. Likewise, if he could demonstrate a somewhat consistent method of the trigger staying back at the wall after it had been released that doesn’t involve a wood screw falling up into the trigger pocket. This is an interesting observation, but I don’t think it alone explains what’s going on. But! What if he has a weak trigger return spring? How so? Just worn out? Broken? Defective? Trigger springs do break. I’ve broken them in both a Beretta 92FS and a Gen3 Glock 19 owned by me personally. I would think if this was the culprit, though, a drastically weak trigger spring would be obvious in the samples which have fired uncommanded in practice. |
|
Quoted: Not if you have a weak return spring.. Quoted: Quoted: Look, I think SIG needs to take action here, but defeating safeties and being surprised when it goes off does not seem like true evidence. And if anyone’s holster depresses the trigger at all allowing it to go off… who’s fault is that? Both? Seriously. If your evidence requires having to manipulate the gun to make this happen … you’re gaming it. I’ll give this a shot with mine for grins. Not if you have a weak return spring.. So if you have a weak return spring and a bad holster that allows the slide to be jostled it is a possibility. I mean, if that’s repeatable, maybe it’s even a proof point. But this would shoot your own (heh) conjecture in the foot since the guy in the video’s gun doesn’t have that. He has to literally put a wood screw in the frame to hold the trigger back enough to make the mechanism susceptible to such manipulation. I can’t imagine the hue and cry if we defeated a safety or two on any other gun and started slagging it. Earned reputation or not, this is not how engineering or science fixes this problem. Again so nobody thinks I’m white-knighting Sig: There is fire with this smoke; even as a Sig P22X fan and P320 owner, I want Sig to fix this. |