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Bear Creek Arsenal complete upper M4 profile 16 incher, 18 shots fired

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Bear Creek Arsenal complete upper M4 profile 16 incher, 18 shots fired
bj139 Offline
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#19
06-11-2017, 10:35 PM
My BCA 16" SS barrel I bought about 3 months ago is 5/8X24.
My AA Overwatch is supposed to be 9/16X24 and they invented the Grendel so this must be the correct size threads. 5/8X24 is for 308.
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Bear Creek Arsenal complete upper M4 profile 16 incher, 18 shots fired - by bj139 - 06-11-2017, 10:35 PM

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