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