Cirelaw, Just to make life interesting, the M29 Swiss and Mauser Parabellum grip screws use a different thread than your standard P08. David, I do have many vg bore used 9x100mm long barrels in stock in the $60 to $75 range + S&H. TH
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Thank You for the clarification! My name is Eric~
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The interrupted/half threads are the same system the Ithaca Model 37 uses to attach barrels. I think this would work the same way for mounting a suppressor, and the body of the unit would bottom on the flange remaining behind the threads--1/4 twist, and it would be snug.
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I snuck out of the office for a little while yesterday afternoon and put about 20 rounds of Federal 115 gr FMJ through the Luger - no hiccups. Looks like this one works. Quite an interesting recoil experience. New barrel ought to show up about the time I get back from NRA . . .
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I'm just not seeing this as a practicable suppressor adaptation, unless it was for Hollywood. |
Doug,
You're correct about the barrel lock-down on the Ithaca. However, here's a story that might mitigate the swirling gasses aspect: George Rhoads designed a sculpture called the Windamajig. Several examples were fabricated, but an occurrence with the first one, basically the prototype, might shed light on this topic. I wrote most of a description of what it does, but will save the read and direct you to this video of it in action: https://www.youtube.com/watch?v=kok97EfvJbk The example in this video has mounting plates, but the prototype had a threaded pipe coupling screwed to the main post. No one took particular notice that the thing turned counter-clockwise, that is, until the entire sculpture fell off the post--having unscrewed itself--with people watching! If swirling gasses can un-screw a suppressor, why not use a left hand thread, or a gun with a barrel rifled the other way? I think heat and pounding set the stage for looseness. With the '37, it was advised that the keeper ought not to be screwed down very tightly if the barrel was hot, lest one find oneself shooting back over one's shoulder! |
It would be possible for a suppressor to lock into the stub at the top rear of the threading. But I am inclined to agree this was a stateside modification - whether it was for looks only or was actually intended to work I don't know.
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The suppressor could be quickly put on and taken off with this design. It could have a spring latch on the back that locks down in the smooth parts so it would not back off or a one that catches the front ear to keep it on, or any other design. We need to see what goes on the threads! I think the end of the barrel needs careful examination to see it was machined with the threaded section and not added later, although either way, it could be original.
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