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Thread: M11 380 Double stamp

  1. #1
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    M11 380 Double stamp

    Does anyone know of any other stampings on M11 Ingram on one side and RPB on other. Below the RPB stamping my gun has SN A.

  2. #2
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    I have the longer 9mm version, and the stamping on these is kind of horrible. From what I have seen there are a lot of marking changes over the differing production runs by different companies, one point when SWD was buying MAC and Cobray parts to build it's a crapshoot on what they put out.

    On the right side one side it has:
    Ingram M11 Cal 9mm Auto N (the N is smaller and deeper stamped)
    Military Armament Corp
    Powder Springs GA USA

    The serial number is forward on the frame and has an A prefix, the Cobray logo is on the rear of the frame, and it has the usual safety markings.

    On the shooters left:
    RPB Industries 11
    Atlanta GA USA

    And the selector setting.
    The answer to 1984 is 1776.

  3. #3
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    Thanks, well after owning this gun and can for over thirty-five years I looked at it. I had read Mac Man book and was just wondering. Right side is marked INGRAM M11, CAL 380 AUTO. The 380 is in milled oval as described in the book. Next line MILITARY ARMAMENT CORP . Third line is POWDER SPRINGS, GA, USA. Serial number is A#### on front with logo on rear sight area. Left side is marked RPB INDUSTRIES INC. Second line is ATLANTA, GA., U.S.A. The third line is marked SN A. SEMI and FULL on selector switch.

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