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with the intention of building a 300 BLK pistol.
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My 300blk AR is a 9” AAC SBR. I run a Gemtech GMT300blk screwed on the end 99% of the time. GREAT combo.
Some of the really short barrels are working pretty good in this caliber. Ive shot a 5.5” 300blk and it was a very nice/small package.