Get your barrel and gas system parts in one spot!

This kit features a Brownell's B-Tac barrel manufactured from 4150V Steel, and features a Nitride finish for superior hardness, lubricity, and ease of cleaning. The barrel also features a 1:8 twist for 300 Blackout cartridge.  The barrel O.D. at the gas block is 0.750". Included in the kit is a .750" low profile gas block, pistol length gas tube, and roll pin.

Steel gas blocks give you the strength needed to create a custom-built rifle with a mission-specific configuration. Mounts securely to barrel with included setscrews. Clamp-on models squeeze around the barrel as you tighten the side-mounted setscrews. Slip-on models are anchored by setscrews on the underside. Low Profile fits under a free-float handguard and lets you use a longer on carbine-length barrels for a clean, streamlined look with more gripping surface.

This kit also includes a standard roll pin, and a pistol length gas tube. The gas tube has an extremely durable Black Nitride finish that increases corrosion resistance, wear resistance, fatigue strength and cosmetic appeal. These gas tubes look great under a handguard because they match the rest of the black AR-15 parts and are more durable than standard gas tubes.