WinMan Posted November 2, 2015 Report Share Posted November 2, 2015 Just about through my box of mount parts and I have been lucky enough to identify almost everything using the internet and one success on this forum, and hopefully someone will know what this is? I've exhausted my search on the internet so hopefully I can be successful again on this forum. The item is 3.25inches x 4.25 inches and about 3.75 inches tall. It has a bronze bushing as shown in the photos. I shall again be very appreciative to anyone who can identify it. Link to comment Share on other sites More sharing options...
Mike Hammer Posted November 4, 2015 Report Share Posted November 4, 2015 (edited) This may be an early 1930's blank compensator that was used to fire blanks from a Thompson in Hollywood movies in the 30's. It looks like they used a setscrew to lock it onto the barrel. Sorry, did not pay attention more closely to the size, much too big to be this. Mike Hammer Edited November 10, 2015 by Mike Hammer Link to comment Share on other sites More sharing options...
FrostyEOD Posted November 4, 2015 Report Share Posted November 4, 2015 I was thinking it looked like a Browning short pintle mount, but haven't been able to find one that exact shape yet. Link to comment Share on other sites More sharing options...
WinMan Posted November 8, 2015 Author Report Share Posted November 8, 2015 Maybe this will help a bit. Item weighs 2.46 lbs. On inside bottom of bushing is the following electro pencil writing 2680609 NOSF (or NOSP) 7-68. And here are some more photo views which I should have included before. Link to comment Share on other sites More sharing options...
FrostyEOD Posted November 8, 2015 Report Share Posted November 8, 2015 (edited) Ok, NOSP stands for Naval Ordnance Special Projects, 7-68 is the month 7 (July) and year 68 (1968). The longer number is a part or drawing number.NOSF is Naval Ordnance Station Forest Park, Illinois which did research from 1945 - 1970. Edited November 8, 2015 by FrostyEOD Link to comment Share on other sites More sharing options...
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