The Odin Works 300 Blackout Barrel features precision-engineered 416R stainless steel construction with black nitride finish and 16.1-inch medium profile design optimized for AR-15 platforms.Odin Works 300 Blackout AR-15 Barrel16.1" length with medium profile design416R stainless steel construction hand-lapped for precisionBlack nitride finish for durability and corrosion resistanceM4 feed ramps for reliable feeding5/8-24 threading for muzzle devicesButton rifled with 1:8 twist ratePistol-length gas systemWeight: 1lb 10.7ozIncludes black nitrided adjustable gas blockEngineered for superior accuracy and reliability this barrel delivers exceptional performance for tactical applications hunting and precision shooting with 300 Blackout ammunition.