SIG P320

[WhiteDragon]

From Gunsite instructor Freddie Blish:

"The following are comments from a friend who is a Mechanical Engineer, that worked in the firearms industry, as well as automotive racing industry, and currently working in aerospace designing products for DOD.

We both bought Sig M17 variants 2-3 years ago via the NRA Instructor discount program. Here is a recent comment reference to the video above regarding the Sig 320.

“So, after watching this, and messing with my own pistol, my conclusion is the P320 is fundamentally unsafe.

If you depress the sear, it pulls the trigger and activates the bar that depresses the firing pin block out of the way.

The thumb safety does prevent the sear from moving the trigger and the striker block deactivation arm. So, the manual safety version is safer. Doesn’t mean I’m saying it’s safe. (Ed. There are 87 instances of the M17s and M18s firing unintentionally)

The sear should only activate by the trigger and not the opposite, and the sear should be blocked until the trigger is pulled.

It’s actually the most unsafe design I’ve ever recognized. It’s almost as if there’s not safety’s at all. The only active safety on it is a sticker block which is bypasses with a backward function of the sear = no safety at all.

Glock has a sear block, FP block independent of the sear. Sear can’t backdrive trigger or FP block. Also, trigger safety.

When SIG says it’s can’t go off unless the trigger is activated they are not lying… it’s just not being activated with a finger, it’s being activated back driven by the trigger works via impact, random vibration, and or intrusion into the back of the slide by foreign material. Also worn and or dirty parts could result in a simultaneous FP block, sear failure.”"

[Lobo2087]

If these guns just randomly go off why have I seen no report of any going off while lying on dressers at home, hanging in lockers or otherwise going off while not physically in control by a person? Have I missed those?

[WhiteDragon]

If these guns just randomly go off why have I seen no report of any going off while lying on dressers at home, hanging in lockers or otherwise going off while not physically in control by a person? Have I missed those?

Per our conversation, see below:

https://youtu.be/KuTxhHZ0uiA?si=YCBHTzn5bRH_QZN4

[Lobo2087]

Thanks!

[xerts1191]

https://www.ar15.com/media/mediafiles/6 ... 515683.JPG
And this now

[xerts1191]

[WhiteDragon]

Crap, i have a P320 XCarry Spectre. Great gun, just don't trust it 100%.

[xerts1191]

Maybe stash it away, see if Sig will offer a buy back in the future?

[Mike-4]

If these guns just randomly go off why have I seen no report of any going off while lying on dressers at home, hanging in lockers or otherwise going off while not physically in control by a person? Have I missed those?

Per our conversation, see below:

https://youtu.be/KuTxhHZ0uiA?si=YCBHTzn5bRH_QZN4

Very informative. Need to check my P320. Thanks for posting.

[superduty38]

I think Sig could have saved themselves lots of time and money just by adding the little trigger safety lever, like Glock and most every other striker fired pistol. Sig just thinks to highly of themselves. I added the Tyrant IntelliFire trigger to my P365 because I do not trust Sig's design of the trigger assembly. If someone made a trigger like that for the P320 then you would have something.

[smithers599]

Here we go again:

[338lapua]

Crap, i have a P320 XCarry Spectre. Great gun, just don't trust it 100%.

I have a few the DH3 version of the 320, I rarely clean them but I load my own with clean powder. Have over 25K through 2 separate pistols each and never fired without my finger depressing the trigger. Averaging 10K between cleanings. Quite a few people I shoot steel with use Sig 320 models and I have never witnessed one go off on their own it the steel bay or anywhere else. I shoot 2-4 days a week and see sigs almost every time. I will not be getting rid of mine.

Maybe it is mostly the cheap ones they turn out for the government contracts that have issues.