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Posted: 1/20/2012 5:44:49 PM EDT
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Can someone please measure how much room there is between the rail and the shoulder before the threads on a 14.5" or 16" barrel
any help would be greatly appreciated |
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Quoted:
Not quite sure what you are asking, which threads? my bad, the muzzle threads. I'm trying to put together an upper around an OPS m4-s and want to make sure that it'll work since i need ~2" from the shoulder before the muzzle threads and the end of the rail |
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