> "The shear amount of movement in the trigger it takes on the Glock PLUS the fact the trigger safety has to depressed lends it self to make this scenario extremely extremely unlikely to happen from jostling. Which is the exact opposite for the 320. Tiny amount of movement needed, way more slop in the gun as a whole and no trigger safety all lends itself to be way more likely to happen from jostling. Thats the argument."
The above claim is most likely true: it is easy to pull the trigger accidentally on the Sig. But that isn't the argument. People are claiming it will fire uncommanded.
The video is misleading because he is partially pulling the trigger, which deactivates the internal safety mechanisms.
It is the clickbait equivalent of a video claiming Rust is not memory safe, that starts by showing a Rust program running and causing a BSOD. Then deep in the video, what they show is he wrote a bunch of explicit unsafe code.
What do you want to bet this is a variant of some sort of light pressure against the trigger at some point in the past (including even just heavy movement!) causing a stuck trigger, plus these other issues, resulting in an uncommanded discharge ‘randomly’?
The FBI analysis showed truly terrible wear characteristics and quality control for the fire control parts which can’t be helping.
While true that it is misleading, i still think it's fundamentally correct. You do not expect your firearm to discharge if someone bumps you while the trigger has the slack taken out.
This holds true on basically every modern handgun that has such a mechanism (striker or hammer-fired).
The Sig P320 probably has more issues than the originally discovered drop-safety deficiencies, and Sig US has been very quick to deny-deny-deny. But firing when you pull the trigger is not an issue.
Modern military doctrine says that you shouldn't even pull the weapon from the holster if you don't have the intent to fire. Even if you're not quite willing to implement that (eg for LE), you shouldn't be touching/pulling the trigger without an extremely firm intent to fire.
But in the case of the demonstration in the Wyoming Gun Project video, it is literally the case that an object is being jammed into the trigger until all internal safeties are disabled, then flex and sympathetic movement is applied until the gun goes off.
There may exist a more damning explanation of what has caused the reported uncommanded discharges but that video isn’t it
If you put a few thousand rounds through either it will generate slide and frame rail wear. After this, either would have slightly more "slop" between the frame and the slide.
The glock trigger-dingus can make unintended discharges less likely because it requires an object to go into the trigger guard. But the WyomingGunProject video shows someone putting something in the trigger guard, pulling the trigger past the wall with sympathetic movement, then firing the gun. Not the result of "jostling".
This isn't to say there aren't P320's that couldn't fire uncommanded but the WyomingGunProject video is not the proverbial "smoking gun". The exact cause is, at this time, not publicly known.
