P320 drop safety issues

[John Hearne]

John--My experience with the 320 isn't consistent with what happened with your gun. I and 4 other USPSA shooters have high round counts (10-20k, plus 100k+ dryfire) on about 12 320s. I'm not aware that any of us has had to replace the striker spring.

Not the striker spring but the striker reset spring. It's the small spring that sits parallel with the striker inside the striker assembly. It's job is to put counter force on the striker and pull the striker back enough to allow the striker lock to engage.

[Clusterfrack]

Not the striker spring but the striker reset spring. It's the small spring that sits parallel with the striker inside the striker assembly. It's job is to put counter force on the striker and pull the striker back enough to allow the striker lock to engage.

Sorry--I was typing prior to having coffee. I have not inspected those.

[DallasBronco]

Yes, I get that, in fact I've had M&P Compact 9 and 45, and still have shield 9 and 45. What I don't get is in what way the hinge between the top and bottom half of the trigger is supposed to prevent the inertial fire.

The tab contacting the frame does that. It prevents the trigger from traveling rearward unless the hinge is engaged which moves the tab from engaging the frame.

[tcba_joe]

The tab contacting the frame does that. It prevents the trigger from traveling rearward unless the hinge is engaged which moves the tab from engaging the frame.

I think his question is how does the hinged tab not move with inertia with the rest of the trigger. It makes up a good amount of the mass of the trigger and the hinged section is at the end of the fulcrum, how does it also not move rearward under inertia?

[Wondering Beard]

I think his question is how does the hinged tab not move with inertia with the rest of the trigger. It makes up a good amount of the mass of the trigger and the hinged section is at the end of the fulcrum, how does it also not move rearward under inertia?

It does a little but the tab at the front of the trigger is matched with a tab protruding at the rear so that before the the trigger travels much at all the tab at the rear gets blocked on the frame and in turn blocks all further trigger movement. Furthermore, the weight of the tabs is so light that it barely, if at all in those drops gets affected by inertia.

Look at the videos and GIFs further up this thread and you'll see it in action.

[Talking Monkey]

I think his question is how does the hinged tab not move with inertia with the rest of the trigger. It makes up a good amount of the mass of the trigger and the hinged section is at the end of the fulcrum, how does it also not move rearward under inertia?

Compared to the main part of the trigger shoe, which also has the mass of the trigger bar attached to it, the hinged tab has a relatively minuscule amount amount of mass and a spring to resist rearward movement. You have to look at the whole system.

[HCountyGuy]

So there was an incident of an unintentional discharge from February of last year.

This poor guy brought it up at the time and pretty much nobody (myself included) believed him at the time.

Guess we know now.

Attachment 19063

Bullet hole in his ceiling. Gun was a P320C in .45 ACP
Attachment 19064

[MSparks909]

Not sure if this video has been posted but here it is...a man after @Enel's heart. Striker fired mallet test...and yes the P320 did discharge when rapped on the back of the slide. Since the trigger didn't move rearward from inertia how was the firing pin block defeated? Genuinely curious.

First 3 minutes are him babbling.

[JHC]

So there was an incident of an unintentional discharge from February of last year.

This poor guy brought it up at the time and pretty much nobody (myself included) believed him at the time.

Guess we know now.

Attachment 19063

Bullet hole in his ceiling. Gun was a P320C in .45 ACP
Attachment 19064

He's baaaack. And rubbing it in.
Attachment 19068

[LOKNLOD]

He's baaaack. And rubbing it in.

Can't say I blame him for feeling that way..