Colt Police Positive barrel fitting

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    1. #1
      Junior Member
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      Jun 2010
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      Colt Police Positive barrel fitting

      I need to locate a .5634-32 six fluted finish tap. Also looking for a facing cutter for the 38 Special
      (for Colt Police Positive). Colt Manufacturing does not have any information, neither does Brownell's. Any information would be appreciated.
      Thanks,
      Precept

    2. #2
      Senior Member Steve M1911A1's Avatar
      Join Date
      Feb 2008
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      Northwest Washington State
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      You will probably have to cut those threads on a lathe.
      You're asking for a "tap," and not a "die," so I am assuming that you want to put threads into a hole, for instance in a receiver or frame, rather than onto a barrel.
      The lathe setup to do this is difficult, and it is not something to be attempted by the faint-of-heart. I suggest that you need to consult an extremely experienced machinist.

      (There might exist such a thing as a 1/2"-32 tap, and that might be close enough. You would probably want an interference fit anyway, if you're seating a barrel. Consult a machinist-supply house for that size of tap. You should be able to find one on the web.)

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