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Thread: Hammer won't stay cocked

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  1. #1

    Hammer won't stay cocked

    I have done many 1911's before and have never had this problem. I was asked by a close friend to put a new trigger in his springfield M1911 a-1 i though no problem. After installing the trigger i started reasembly. After putting everything back I went to cock the hammer and realized that it would not stay cocked. I have tried everything that i can think of to fix this problem but i am at a loss any help would be great.
    Thanks,
    Adam

  2. #2
    Join Date
    4th September 2004
    Location
    North Carolina
    Posts
    10,693
    Are you sure you have the sear spring in right?

  3. #3
    Join Date
    4th February 2005
    Location
    3rd Rock from the Sun
    Posts
    13,722
    Sounds like one of the parts didn't go back in the gun quite like it was before it came out. Good luck!
    Lynnie, "Nobody realizes that some people expend tremendous energy merely to be normal. "
    - Albert Camus

  4. #4
    The sear sring a appears right

  5. #5
    Join Date
    1st June 2004
    Location
    Lexington, North Carolina...or
    Posts
    11,203

    Hammer no Cockie

    Quote Originally Posted by A_Cross
    The sear sring a appears right
    Appears right...but appearances can be deceiving. Is the left leg of the spring on top of the left sear foot? It can get under it and reassemble without a hitch...but the sear can't reset.

  6. #6
    Join Date
    15th January 2005
    Location
    Glendale, AZ and Seattle, WA.
    Posts
    151

    Hammer follow . . .

    Rip the weapon apart and re-assemble.
    If all you did was replace a trigger - well . . .

    tear-wown and Re-assemble.

    If it is still broken, reassemble with old trigger.

    If it works, Reassemble with new trigger.

    Let us know how it goes.
    N7CAV, trooper
    Loren B. Cobb

  7. #7
    Join Date
    1st June 2004
    Location
    Lexington, North Carolina...or
    Posts
    11,203

    Try, Try Again

    It's likely the sear spring. That...and missing hammer hooks are the only two things that will stop a 1911 from cocking. Even with 1/8th inch of the sear nose ground off, they'll usually hold full cock at least for a few seconds. I've seen'em actually function for a couple dozen rounds with the sear nose cut off.

    At any rate, if the sear spring is in correctly, it should half-cock.

  8. #8
    Join Date
    12th March 2006
    Location
    Western Arkansas
    Posts
    469
    I had the same problem the last time I detail striped it. It turned out the problem was the sear spring. It looked right but after removing it and re assembling it, it worked.

  9. #9
    Join Date
    8th June 2004
    Location
    Surf City, CA
    Posts
    575
    You need to take the grip safety off to see if the sear spring is correct. This is what you should see:


  10. #10
    Join Date
    29th May 2004
    Location
    Athens, Greece, Earth
    Posts
    27,355
    Blog Entries
    2
    Either that, or an excessively long trigger.
    John Caradimas SV1CEC
    The M1911 Pistols Organization
    http://www.m1911.org

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