Bowden Tactical Adjustable Gas Block 0.750 4140 Steel Nitride for AR-15

The Bowden Tactical J1311534 Low-Profile Adjustable Gas Block in 4140 steel with a Black Nitride finish delivers durable, precision-tuned performance for AR-15 gas systems with a .750 diameter. This American-made gas block combines American-sourced pre-heated 4140 steel with a rugged Black Nitride coating to resist wear and corrosion while maintaining a sleek, low-profile silhouette ideal for tight setups and ambidextrous configurations. The design features a 0.750 diameter set-screw style and an 8-32 adjustment screw accessible from the muzzle end, complemented by a 4-40 locking set screw to secure settings under use. For barrels that are not pre-dimpled, a gas block alignment tool is recommended to ensure accurate alignment and reliable operation. Lok-Tite thread locker is advised when installing the set-screws to maintain a secure, repeatable gas-tuning experience. Backed by a 100% warranty against manufacturing defects, this gas block is built to endure field use, range sessions, and precision tuning, making it a reliable choice for rifle parts, gas system upgrades, and performance-focused AR-15 builds where consistent gas control and a clean, low-profile profile matter most.