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Thread: How to Convert .22TCM A2 Pistol to 9mmP?

  1. #1
    Join Date
    23rd May 2010
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    How to Convert .22TCM A2 Pistol to 9mmP?

    Have a 17-round .22TCM pistol. What parts do I need to convert to 9mmP?
    . . . a legend in my own mind . . .


  2. #2
    Join Date
    2nd June 2004
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    I believe all you need is the new barrel and 9mm recoil spring.

    https://ezine.m1911.org/showthread.p...-Pistol-Review
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside
    Likes (1) :
    Ric4509 (4th December 2023)


  3. #3
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    23rd May 2010
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    Quote Originally Posted by Hawkmoon View Post
    I believe all you need is the new barrel and 9mm recoil spring.

    https://ezine.m1911.org/showthread.p...-Pistol-Review
    I thought that was about it, but I got this answer to my specific question from Armscor's support website: "As this is a stand-alone TCM model. Breech face dimensions are too small for 9mm. If the gun is altered, it will not function the TCM."

    This sounds off to me, but I'm not sure.
    . . . a legend in my own mind . . .


  4. #4
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    Doesn't sound logical. Certainly, the rim diameters are different. The .22 TCM is derived from .223 Remington/5.56x45 brass, which has a rim diameter of 9.60mm (.378"), while the 9mm Parabellum case has a rim diameter of 9.96mm (.392"). But it seems unlikely that Armscor would have tooled up a totally different slide for the "dedicated" .22 TCM pistols when they already had 9mm slides that will work just fine with the .22 TCM cartridge.

    Simple answer: find yourself a fired 9mm case and see if it will slide into the breechface cut of your slide.
    Hawkmoon
    On a good day, can hit the broad side of a barn ... from the inside

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