GUN 1911A1 crew: Firing Pin Stop Drop Malfunction

Discussion in 'On Topic' started by Dolan, Jul 17, 2008.

  1. Dolan

    Dolan OT Supporter

    Joined:
    Aug 6, 2007
    Messages:
    3,095
    Likes Received:
    0
    Location:
    United States
    Hey guys,

    I've got a very old Colt 1911A1 from 1933. It was "restored" before I bought it (Not entirely sure what they meant by that).

    I probably put 600 rounds through it after I got it with no problem. Then, at the range, I had a firing pin stop drop malfunction, and ended up losing the stop itself, along with the firing pin and spring.

    I ordered replacements for a 3 parts, put them back in place, and tested it out today. Got 7 shots off, but when I fired the last round of the first magazine, the exact same thing happened again.

    What do I need to do to fix this for good? If I simply order an oversized stop, and file it to fit my gun, will that do the trick?

    I'd like to fix this for as little as possible. It's just a toy to shoot with, not a carry or home defense gun or anything, so I'd like to avoid a gunsmith if at all possible.

    Thanks OT :bowdown:
     
  2. Dolan

    Dolan OT Supporter

    Joined:
    Aug 6, 2007
    Messages:
    3,095
    Likes Received:
    0
    Location:
    United States
    Actually, I'm not entirely sure what's wrong with it.

    I put it back together just now, and when I dry fire it, the firing pin gets stuck fully extended, and the stop simply falls out because there isn't anything holding it in place.

    I have to push the pin back in to place (forcefully) from the inside of the slide to get it back in place, but when I dry fire it again, the pin gets stuck every time. :dunno:
     
  3. AB13

    AB13 New Member

    Joined:
    Jul 8, 2006
    Messages:
    3,668
    Likes Received:
    0
    Location:
    Seattle, WA
    What was the last time you cleaned the firing pin channel? Take a q tip to it and tell me if you see any shiny flakes on the inside. Something is obstructing your firing pin in there. I have a feeling it's primer flow and you've acquired enough to start to jam your firing pin. I have a feeling someone may have stuck an undersized/unfitted pin and slide stop on that gun.
     
  4. Dolan

    Dolan OT Supporter

    Joined:
    Aug 6, 2007
    Messages:
    3,095
    Likes Received:
    0
    Location:
    United States
    Thanks for the advice.

    I pulled it and took a couple Q-tips to it. No shiny flakes, but I did get some black sooty gunk out of there. Not a ton, but it turned the ends of 3 q-tips (6 ends) black. :dunno:

    On the bright side, I put it back together, and dry firing it (with a bic pen in the end), I can't get the pin to stick again. So maybe it was just dirtier than I thought.

    One more question: How loose is the firing pin stop supposed to be? Without the pin/spring in place, if the gun is in the upright position, the stop won't stay in place due to gravity. When it is in place, with the pin/spring still out, the stop can wiggle a little side to side.

    With the pin/spring in place, it feels really tight, but I guess that's to be expected.
     
    Last edited: Jul 17, 2008
  5. GarandBobcat

    GarandBobcat New Member

    Joined:
    Jan 21, 2007
    Messages:
    1,640
    Likes Received:
    0
    Location:
    Merced Co., CA
    I'd say that if your FP stop is falling out of its own accord, it might be a little loose in its channel.
    An EGW Oversized Firing Pin Stop, properly fitted, with just a little bevel to the lower-rear corner, might help a lot. And it's not an expensive part. IIRC, it's about $15, and if you're careful, you can fit it in with just a fine metal file.... let me dig up a link to that process...

    http://www.ar15.com/forums/topic.html?b=5&f=49&t=60757
    This one gets into detail, and the OP there admits that the equipment used was kinda overboard, but there it is.
     
  6. Dolan

    Dolan OT Supporter

    Joined:
    Aug 6, 2007
    Messages:
    3,095
    Likes Received:
    0
    Location:
    United States
    Ordered one, thanks for the link.

    Hopefully the firing pin cleaning + oversized stop will do the trick. I'm dying to shoot it again. :)
     

Share This Page