Our low profile, phosphate, gas block is crafted from 4150 hardened steel, ensuring durability and reliability. Designed for barrels with a .750 outer diameter, it features a sleek black phosphate finish. Ideal for AR-15 and AR-308 builds, this gas block offers seamless fitment under free-float handguards, enhancing your rifle’s performance. Key Features: – Product Type: Gas Block – Mounting System: Set Screws – Material: 4150 Hardened Steel – Finish: Black Phosphate – Weight: 1.60 oz – Unique Features: Low Profile Design