Luth Ar .750 Gas Block

The Luth Ar .750 Gas Block is a low-profile, precision-engineered component designed for AR-platform rifle builds that require controlled gas flow and reliable cycling of the bolt carrier group. This American-made gas block features a .750-inch inner diameter, making it suitable for use with .750-inch diameter barrels commonly found in AR builds.

The black manganese phosphate finish provides corrosion resistance and a professional aesthetic suitable for duty, competition, and training applications. The design incorporates two set screws and one roll pin for secure attachment to the barrel, ensuring consistent gas port alignment critical to reliable function.

This component is essential for shooters building or upgrading AR rifles for patrol duty, advanced combat marksmanship courses, 3-gun competition, or precision rifle training. Proper gas block indexing is a standard feature that ensures optimal carrier velocity and reduces carrier tilt, directly extending component lifespan and improving accuracy through reduced wear on critical receiver surfaces.