Help, .45 acp mags not locking the slide back after the last round has been fired.

This is a discussion on Help, .45 acp mags not locking the slide back after the last round has been fired. within the General Firearm Discussion forums, part of the Related Topics category; I have noticed several of my .45 acp mags not locking the slide back after the last round has been fired. As I find them, ...

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Thread: Help, .45 acp mags not locking the slide back after the last round has been fired.

  1. #1
    Member Array TampaSsgt's Avatar
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    Help, .45 acp mags not locking the slide back after the last round has been fired.

    I have noticed several of my .45 acp mags not locking the slide back after the last round has been fired.

    As I find them, I have been putting them in a drawer and replacing them with new ones. At present I have 4 mags down, but would like to be able to use them again.

    Can anyone please explain what causes this and is there anything I can do to fix the mags and salvage them back to working properly?
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    Ooops, sorry I forgot to mention that it was for a 1911 Colt Combat Commander in .45 acp.
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    Quote Originally Posted by TampaSsgt View Post
    Ooops, sorry I forgot to mention that it was for a 1911 Colt Combat Commander in .45 acp.



    First thing I would for would be weak springs, then for bad followers.
    "The pistol, learn it well, carry it always ..." ~ Jeff Cooper

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    Member Array ranburr's Avatar
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    It is either a bad mag or a bad slide stop.

    ranburr

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    I started to take one of the non-locking magazines apart to stretch out the spring.

    I stopped when it appeared that once I got the bottom of the magazine off it might not go back on.

    Any suggestions on whether or not the magazine bottom can be "forced" off and not break the mag?

    Anyone have a website where I can go to and see how the mag bottoms are supposed to come off?

    btw.. the magazines are marked " Colt 45 Auto " on the bottom.
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    If they are Colt supplied magazines, the bases don't come off. Take a pencil and push the follower down a couple inches, put a nail, paper clip etc., thru one of the witness holes (so it goes completely thru the mag), make sure it is under the follower, turn the mag upside-down a shake out the follower.
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    Quote Originally Posted by OD View Post
    If they are Colt supplied magazines, the bases don't come off. Take a pencil and push the follower down a couple inches, put a nail, paper clip etc., thru one of the witness holes (so it goes completely thru the mag), make sure it is under the follower, turn the mag upside-down a shake out the follower.

    Thanks, it worked like a charm!
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    You're very welcome Sir.
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    If you are getting a real collection of magazines where the slide is not locking back then I would replace the slide stop.

    Try one from Brownell's - order an Ed Brown...it should drop right in - and see if that fixes your magazine problem.
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    Quote Originally Posted by QKShooter View Post
    If you are getting a real collection of magazines where the slide is not locking back then I would replace the slide stop.

    Try one from Brownell's - order an Ed Brown...it should drop right in - and see if that fixes your magazine problem.
    +1. If its happening on more than 2 or 3 mags, its the slide stop.

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    Quote Originally Posted by AZ Heat View Post
    +1. If its happening on more than 2 or 3 mags, its the slide stop.
    Out of all of my mags it was only happening on four. After I " tweaked " the follower, all four of the mags are now locking the slide back.

    I plan on segregating these four in my range bag and they will be used exclusively for range use.

    Thanks to all for the info and the help!!
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    Good deal.

    You can buy new followers & springs and put them back in rotation if they're 100%.
    "The pistol, learn it well, carry it always ..." ~ Jeff Cooper

    "Diligentia Vis Celeritas"

    "There is very little new, and the forgotten is constantly being rediscovered."
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    I have some Wilson followers and mag springs that are doing the same thing. Oddly, they seem to work occasionally when firing the gun, but they will not engage the slide catch when working the action by hand.

    The standard follower worked fine with the slide catch in all the mags, but they were bad about rotating and binding as I loaded them, so I got the Wilson's.

    Any suggestions? The new springs didn't seem noticeably different than the originals, and I can't see any obvious flaws in the followers.
    "A well-educated electorate, being necessary to the continuance of a free state, the right of the people to keep and read books shall not be infringed."
    Is this hard to understand? Then why does it get unintelligible to some people when 5 little words are changed?

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