Sanders Armory 24" Match Grade 6MM ARC 416R Stainless Steel AR15 Barrel with Tapered HBAR profile with 1:7.8 Twist Rate is a MEDIUM weight HBAR barrel with Rifle-Length Gas and 5R Rifling. The tapered HBAR precision barrel has been hand lapped and air gauge tested with 5R rifling for long-distance shooting with below Sub MOA guarantee. We use M4 Barrel extensions with a manufacturer's Limited Lifetime warranty against manufacturers' defects. It uses a .750 Gas Block with a Rifle Length Gas tube.

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