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  1. Gunsmithing
    Hello. I was looking at Sig's mcx and thought it looked great. (I'm not a fan of direct impingement, or the buffer tube of an AR). I was thinking a 6x45 would be great in it, sadly tho sig only has there calibers for it .300 blackout, 7.62x39, and 5.56. I was wondering if there was a way to make...
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