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Thread: Question about the markings on my M11/380

  1. #1
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    Question about the markings on my M11/380

    Iíve searched online and not found any mention of any marked as this one.
    Also, does anyone have any info on the bolt?






  2. #2
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    Just an rpb over stamp?

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    You have a receiver that was bought from the MAC bankruptcy auction when they folded from Marietta after they moved from Powder Springs. It was finished and registered by RPB. It's called a RBP double stamp.
    The bolt is a cast and chrome plated.

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    I am aware it is an RPB overstamp, but I’m curious about the markings on the right side of the receiver. They seem a bit unusual

  5. #5
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    What exact markings are you referring to?
    My RPB over stamp is just like yours.

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    Is it common to be mis-stamped as “MAC. M11, CAL. 308 SMG”?

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    Quote Originally Posted by rodfarva View Post
    Is it common to be mis-stamped as “MAC. M11, CAL. 308 SMG”?
    Some got fixed, some did not.

    Name:  M11-308.jpg
Views: 254
Size:  137.5 KB
    NFA Firearms: In A World Of Compromise, Some Don't.

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    Thank you. I did not see this mentioned elsewhere in my internet search.
    Last edited by rodfarva; 04-06-2021 at 09:14 PM.

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    The CIP N would appear to be A "Commission Internationale Permanente" Proof mark. Curious if in its history it was ear-marked to go to Europe or be in some organization test trial where it needed to be proof tested.

    https://en.wikipedia.org/wiki/Commis...feu_portatives

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    Cool. I never knew some had the 308 typo. I’m looking for a M11 and I’m adding that to the list of must haves.

  11. #11
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    Now that you own the gun, consider buying the excellent book on the subject. It has everything you ever wanted to know about the history. The author is a member here.
    https://www.amazon.com/Mac-Man-Gordo.../dp/0982391811

  12. #12
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    I have the Mac Man book. It is a great book. I couldn’t find the info on the “CAL. 308 SMG” marking covered, but I may have overlooked it.

  13. #13
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    Page 172 at the bottom.

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    Quote Originally Posted by cherenkov View Post
    The CIP N would appear to be A "Commission Internationale Permanente" Proof mark. Curious if in its history it was ear-marked to go to Europe or be in some organization test trial where it needed to be proof tested.

    https://en.wikipedia.org/wiki/Commis...feu_portatives
    The "crown BNP" is a Birmingham proof so, British export.

  15. #15
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    The guns were originally stamped Ingram M10 or M11 and Powder Springs. Ingram needed money to expand and he sold controlling interest in his company to a Banker investment group called the Quantum Group. Those Bastards forced Ingram out of his Company and removed his name from the guns. After Ingram and Werbell were forced out the guns were stamped MAC 10 or 11 and Marietta Georgia. It looks like when yours was stamped they reversed the 8 and 0, interesting! I wonder if RPB screwed up the stamping after they bought the receiver flat from the bankruptcy auction or if MAC did it. I don't think it will increase the value but a good conversation piece.
    Last edited by boomer535; 04-07-2021 at 04:38 PM.

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    It's cool to see one that was not fixed. My M11 has the mill mark and corrected "380."

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    The "308" marked ones would have been great for the guy who made M60s from MACs, lol

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    Quote Originally Posted by DistalRadius View Post
    The "crown BNP" is a Birmingham proof so, British export.
    Interesting - I'd be curious what the history of the gun is. A factory demo or other reason it would have those markings.

  19. #19
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    Quote Originally Posted by sniperdoc View Post
    The "308" marked ones would have been great for the guy who made M60s from MACs, lol
    Lol...that guy

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