BARREL .300 BLK 1:6 TWIST 6 GROOVE
All X-Caliber AR barrels are made to a 1.92" gas block length EXCEPT our Lightweight contour which has a 1.00" length.
All X-Caliber AR barrels are made to a 1.92" gas block length EXCEPT our Lightweight contour which has a 1.00" length.
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