Modular Gas Block

Brownells has introduced an easy-to-install modular gas block for AR-15/M-16 rifles for tactical duty. Designed to offer additional capacity and placement options for tactical rail-mounted accessories, the Brownells modular gas block features one integrated Picitinny (1913-style) rail, and allows the attachment of up to three additional Picitinny rails, which let the officer attach lights, back-up sights and a variety of other accessories. Rugged machined aluminum construction and a durable hard coat anodized finish provides superior strength without weighing down the firearm. Three hardened steel set screws quickly anchor the Brownells modular gas block to any standard .750-inch (19mm) AR-15 or M-16 barrel.