1911 Question

[fishinmike]

I recently acquired a Thompson Auto Ordinance 1911. I replaced the broken ejector but I have another issue. When the hammer is back and the thumb safety is on, the gun will still fire. Is this a Sear Spring issue, or a safety issue, or both? Any help would be appreciated. Thanks, Mike

[JackOfAllTrades]

'Shouldn't' be the spring...

http://www.thehighroad.org/showthread.php?t=231096

-Steve

[madcow41]

sounds like the safety do the other two safeties work correctly? that will narrow it down

[brokenvet]

The thumb safety is improperly installed or worn out.

A sear spring issue is that the gun will fire without depressing the grip safety.

You can buy a thumb safety form MidwayUSA, Numrich or were ever you like.  It is not a drop in part you have to fit it in.

[fishinmike]

Thanks for the replies. I went ahead and ordered a new safety and a sear spring from the Thompson website. We will see what happens.

[brokenvet]

You did not need a sear spring all you needed to do is to bend the right finger of the spring towards you.  But you bought it.

[JackOfAllTrades]

You did not need a sear spring all you needed to do is to bend the right finger of the spring towards you.  But you bought it.

86% of springs will break if not bent properly.  Buying a new one was not a bad idea.

-Steve

[fishinmike]

Ok, the thumb safety was replaced and works great. Put a new sear spring in, but the gun will still fire without the grip safety depressed. Any ideas, Thanks

[huntinguy]

Pull it out and check it for wear.

Sounds like someone dropped this poor thing on its head:  might just want to have a smith go through the entire gun.

 

[Helix]

what you have there is a single action only converted 1911.  lots of gues pay good money to have that done and you didn't have too.    Just kidding by the way. 

[fishinmike]

what you have there is a single action only converted 1911.  lots of gues pay good money to have that done and you didn't have too.    Just kidding by the way.

[JackOfAllTrades]

Go back to the diagram I linked to..  Either the sear is worn/modified on the bottom, or the Grip safety is worn/modified, or the rear bar of the trigger is worn/modified. I suppose that worn pins could do the same thing too, although that is a stretch. Incorrect version of grip safety or if it is improperly fit would also allow this.

-Steve