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Thread: Fitting a thumb safety, steps involved

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  1. #21
    Join Date
    2nd September 2007
    Location
    Middle of AZ
    Posts
    1,171
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    1
    D-will-, you'd do well to read this whole thread, maybe twice, and pay a lot of attention to 1911Tuner's advice. Also look in the smithing/maintanance area, and you'll find a thread about this very subject, with some excellent pics of what you should be seeing. There's also a test regimen to follow when you're ready to see if your fix worked.

    The thumb safety operates by blocking the movement of the sear, locking the sear against the hammer. It has NOTHING to do with the trigger; that's the grip safety's job.

    I can't stress this enough: BE VERY CAREFUL WHEN YOU REMOVE METAL. The reason I had to fit a safety in the first place was that I installed a new hammer and safety set, and the thumb safety wouldn't seat properly because the stud on the thumb safety was being blocked by the new sear (which didn't have exactly the same profile as the stock sear.) I filed too much, AND in the wrong area, and ended up having to "upgrade" to a $39 King's extended thumb safety. I think I actually like the old GI part better.

    If i could do this, you probably can, too. Good luck, don't get too file happy, and be patient.
    "Evil is powerless if the good are unafraid."- Ronald Wilson Reagan

    "Mmmmm.....tasty burglar......"- Tonka the Large Dog

  2. #22
    Join Date
    2nd September 2007
    Location
    Middle of AZ
    Posts
    1,171
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    1
    I think this is probably the prob with my pistol. Because the safety wont go all the way up when it's in the slide notch. But on a stripped frame. the safety moves up and locks the trigger well. I do believe then that on a stripped frame, the sear is able to engage well in the sear engagement area of the safety. Would it be possible for me to remove by filing the top portion of the safety lever and also a portion of the slide notch(rightside) so that the the safety can go a little up and still achieve the same effect as when you file the sear engagement area deeper? Comment please.[/QUOTE]

    EEEK! NO! PUT THE FILE DOWN AND GO HAVE A NICE GLASS OF MILK!

    Sorry, I missed that part earlier. Don't fit any part EXCEPT the thumb safety. Don't file on your sear, frame, or slide. Like I posted before, seek out the wisdom to be found in the gunsmithing section. It's actually pretty simple, but isn't to be rushed into by any means.
    "Evil is powerless if the good are unafraid."- Ronald Wilson Reagan

    "Mmmmm.....tasty burglar......"- Tonka the Large Dog

  3. #23
    Join Date
    22nd June 2008
    Posts
    1
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    I just installed a new Wilson Combat thumb safety on my Kimber and got it functioning perfectly except that it seems to be pushing too much on the plunger. I'm getting metal filings and it's extremely stiff there. If I remove the plunger the safety functions just fine, so it's not anything else binding it up. Is it safe to carefully take the hump down on the safety a hair at a time to allow a little more room to clear?

    I've added a pic for clarity. Gun and photo aren't mine.

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