gun shoots when engaging thumb safety up

[colt45gunner]

Anyone ever have the odd problem where a hammer falls down and fires the gun when the thumb safety is pushed up to stop the hammer from falling ?

YES, I said hammer comes down and fires when safety is pushed up into (supposedly) safe position ????

My new STI has done this last night...getting it checked out tonight.....

Curious if any STI/SVI owners have this happen ? I got it with the new Alum. grip and not sure if somehow this new grip is poorly set up or designed...etc..

oh, odd thing #2, it wouldn't fire with mag in the gun...trigger being pulled back would touch mag before releasing trigger...

Anyways, too early to judge...

any feedback from others with this extremely odd and dangerous problem has occuried to them and what caused it... ?

One suggestion so far is that sear spring slipped out of place causing 1, trigger to not fully engage (explains why that happened last night) and then when I chose to stop pulling trigger and chose to pause and i pushed up safety, something connected with something inside and release the hammer.. ?

And I'll update ya'll when I know too....

 

[m39a2]

Your pistol is assembled incorrectly! #1. The safety does not stop the hammer from falling, it blocks the sear from being moved back far enough to disengage the hammer sear. # 2. The sear sounds like it is in front of the trigger bar not behind it. Who put this thing together for you my friend?

Scott

 

[colt45gunner]

problem fixed

Your pistol is assembled incorrectly! #1. The safety does not stop the hammer from falling, it blocks the sear from being moved back far enough to disengage the hammer sear. # 2. The sear sounds like it is in front of the trigger bar not behind it. Who put this thing together for you my friend?

Scott

seems the sear spring was a bit oversized for this grip and needed modification...all good now, or at least so far