Luth Ar .936 Gas Block

The Luth-AR .936 Gas Block is a low-profile gas block designed for AR-platform rifles requiring precision gas management without adding unnecessary height to your upper receiver. Built with a black manganese phosphate finish, this component is engineered to regulate propellant gases reliably across a range of ammunition loads and shooting conditions, making it a core choice for builders and operators who prioritize consistency and durability.

The .936" inner diameter matches standard mid-length and rifle-length gas tube configurations commonly found on modern AR-15 and AR-10 platforms. Dual set screws and a single roll pin provide robust retention against the barrel, preventing unwanted rotation or migration during sustained fire. The manganese phosphate finish—a proven military-standard surface treatment—resists corrosion and wear, ensuring the block maintains consistent performance whether deployed in humid coastal environments, arid ranges, or wet forest conditions. The low-profile design minimizes interference with optic mounting systems and handguard configurations, preserving your rail real estate and allowing maximum flexibility in accessory placement.

This gas block suits AR builders focused on reliability and repeatability—from duty rifle builds to precision training platforms. The .936" bore accommodates the most common barrel profile dimensions, making this component a universal fit for most new-build uppers and retrofit projects. Made in the USA, the Luth-AR block meets the mechanical and material standards expected in professional and civilian tactical applications where gas system tuning and component longevity directly impact mission success.