Introducing the Faxon Patent Pending Low-Profile .625" Adjustable Gas Block a rugged, precisely adjustable gas block engineered to give your AR-15 consistent, reliable cycling whether suppressed or unsuppressed. Its patent-pending anti-fouling adjustment design keeps the adjustment screw out of contact with gas-port carbon to prevent seizing and maintain smooth, repeatable adjustments. Built for durability and tuned control, this low-profile gas block provides 14 tactile settings to fine-tune gas flow, recoil, and reliability for any shooting condition. Features Patent-pending anti-fouling design: Adjustment screw never contacts gas-port carbon, reducing risk of seizing or fouling. Precision adjustability: 14 tactile settings from fully open to fully closed for fine-tuning gas flow and cycling. Low-profile: Designed to sit under low-profile rails and work with .625" gas journals. Rugged construction: Built to withstand harsh use and repeated adjustments. Suppressed & unsuppressed ready: Optimized for reliable operation in both configurations. Product Specifications Gas Journal Compatibility: .625" Mounting: 3 set-screw mounting for secure attachment Adjustment Method: Adjustment screw operable with a 3/32" Allen key or a flat-head screwdriver Length: 1" overall Settings: 14 tactile positions (fully open fully closed) Product Type: Gas Block Profile: Low-Profile Resources Product video thumbnail available. Free 3D-printable Faxon Adjustable Gas Block assembly fixture (resource provided separately). Additional Information This gas block is intended for use on AR-15 platforms with a .625" gas journal. As with any gas-system modification, verify compatibility with your barrel, gas system length, and intended ammunition. Proper installation and headspacing by a qualified gunsmith is recommended.