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replacing Springfield Armory ILS?

Discussion in 'Handguns: Autoloaders' started by spartacus2002, Aug 7, 2005.

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  1. spartacus2002

    spartacus2002 Member

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    Jan 7, 2003
    Messages:
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    Location:
    St. Pete, FL
    I have a Springfield Armory 1911A1 Loaded. It has the flat mainspring housing with the Integral Locking System. I want to replace it with the humped housing. Must I use an ILS housing, or can I just replace it with a non-ILS aftermarket housing?
     
  2. Old Fuff

    Old Fuff Member

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    Dec 24, 2002
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    Location:
    Arizona
    You can use a stock 1911A1 arched mainspring housing or commercial equivalent, but you should change the following internal parts too:

    Mainspring cap
    Mainspring cap pin
    Mainspring
    Mainspring retainer

    The above parts fit inside of the mainspring housing (flat or arched). When they have been assembled you should be able to remove the original mainspring housing assembly and replace it with the new one.

    You can obtain these parts at: www.brownells.com
     
  3. NoahFN

    NoahFN Member

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    Location:
    Dayton, Ohio
    Old Fuff has it right.

    I replaced the ILS on my Springfield G.I. and it was easier than I thought. I replaced the mainspring housing all-together, as I didn't want the little lock showing in the back. I used an Ed-Brown serrated arched housing, since I like the arched feel.
     
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