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Thread: Colt with 11.5" barrel failing to lock back on last round

  1. #51
    Join Date
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    Quote Originally Posted by Iraqgunz View Post
    LMT used to use a .071 port as well and recently switched to .078 for commercial stuff. Noveske uses a .081 port. Measured multiple times on multiple barrels with pin gages. I have measured 3 different Rainier Arms barrels and all were at .071-.072. Those barrels worked fine unsuppressed with M855 and M193.
    If that's what noveske uses and others are all in the same range, why does every hammer DD so bad? I've read colt 10.5 was much larger yet?
    Last edited by wirides; 01-01-16 at 00:19.

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