The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block ensures that owners of the popular AR-15 rifle aren't held hostage to the limitations of traditional-length gas systems and can adjust their rifle's gas flow for their purposes. The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block comes with a simple tool that adjusts an integral gas meter one click at a time without using spring-loaded systems with small parts that are easily damaged or lost.

• Made from durable, lightweight titanium
• Features bead-blast finish

The SLR Rifleworks Sentry Adjustable Set-Screw Gas Block also features two set screws .400 of an inch apart that secure the product to an AR barrel easily.