Faxon Duty Series 7.5 Gunner 300 BLK AR-15 Barrel (Pistol-Length Gas) - 4150 CMV -- Button Rifled -- Gunner Lightweight Profile -- Nitride Inside & Out -- MPI & Headspace Checked - The Faxon Duty Series 7.5 Gunner 300 BLK delivers reliable performance in a compact package. Our Gunner profile blends Gov’t durability behind the gas block with a lighter forward section to reduce front-end weight speed transitions and keep your build balanced. - Machined in-house from 4150 CMV button rifled in a versatile 1:8 twist and salt bath nitride treated inside & out for corrosion and wear resistance. Every Duty barrel is stress relieved air-gauge tested magnetic particle inspected and individually headspace verified for safety and consistency. - Key Benefits - Gunner profile: Ideal balance-sturdy behind the gas block with weight savings up front. - Pistol-length gas: Tuned for 300 BLK cycling including common subsonic and suppressed setups. - 4150 CMV + Nitride: Hard-wearing steel with black nitride inside & out for longevity. - 1:8 twist: Stabilizes a wide range of 300 BLK bullet weights. - Rigorous QC: Stress relieved air-gauge tested MPI and headspace checked in-house. - Specifications - Caliber / Chamber 300 Blackout (300 BLK) - Length 7.5 - Profile Gunner - Gas System Pistol-Length - Material 4150 CMV - Rifling Method Button-Rifled; 1:8 Twist - Finish Salt Bath Nitride (inside & out) - Muzzle Threads 5/8x24 - Gas Block Diameter .750 - Gas Block Journal Length 1.9 - Barrel Extension M4 - Weight 0.87 lbs - Crown 11° Target Crown
