Mainspring Housing Lock

Discussion in 'Springfield Armory M1911' started by Geezer, Apr 4, 2015.

  1. Geezer

    Geezer New Member

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    Who has changed their mainspring housing to get rid of the lock? I have some extra mainspring housings around but haven't changed mine yet. I need to get the internal parts and do it. I've never had any problems with the lock, I just don't like the idea of it.
     
  2. pokute

    pokute Sincere as a $5 funeral

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    The MSH lock is a pretty clever way of locking a gun. If you want to lock a gun.

    Swapping the MSH is simple. First you need a new MSH, mainspring, and a 1911 pin set. The factory MSH has a few non-standard parts, so you shouldn't bother trying to reuse any part of it.

    Your new MSH will need to be assembled using the new spring and pins. It's pretty straightforward, but compressing the spring can be a pain.

    Brownell's has a decent little instructional video:

    [ame]https://www.youtube.com/watch?v=0yL3-sb9_Jc[/ame]

    And the 1911 forum has a dandy howto:

    http://forums.1911forum.com/showthread.php?t=334332

    The Springfield factory spring is 24lbs. You can go as low as 18lbs without any risk of misfires, and usually get a better feeling trigger in the bargain. Sometimes going to a lower power mainspring produces creep in the trigger, so you might want to get an 18 and a 20, just in case the feel of the 18 doesn't appeal to you. The mainspring is the first thing that the slide reacts against in recoil, so the recoil impulse will change. Most people find it smoother after going to a lighter mainspring.
     

  3. Koeppel

    Koeppel New Member

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    I use my MSH lock every day when I put my 1911 away for the night. I'm torn whether to remove it or not
     
  4. pokute

    pokute Sincere as a $5 funeral

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    If you are accustomed to using it, by all means continue to use it. When I was a kid, we broke into neighbor's houses all the time, and one time we found guns and ran around snapping them until somebody called the police...

    Somehow that didn't come out as the compelling argument in favor of safety that I intended.
     
  5. gumpy

    gumpy Lifetime Supporting Member Lifetime Supporter

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    Told on yourself, didn't you?!