Griffin Armament M4SD II, Suppressor, 6.6 in, 5.56 NATO, Stainless Steel, Black Finish, QD Mount, Includes M4SD Hammer Comp GAM4SD2

Overview

The Griffin Armament M4SD II suppressor is a high-performance sound mitigation device designed for 5.56 NATO platforms. Beginning as over ten inches of 17-4 stainless tool steel bar stock, the suppressor is built around a billet-machined chassis with integrated muzzle device bearing surfaces. This monolithic structure maximizes safety, provides optimal temperature transfer to normalize heat, and mitigates baffle erosion. A series of flutes surrounds the chassis, offering an enhanced strength-to-weight ratio and a 40 percent increase in surface area for improved cooling and durability. The M4SD II features a length of 6.6 inches, a 1.5-inch diameter, and weighs 17.4 ounces with a black high-temp Cerakote finish. It utilizes the SDQD mounting interface, designed to fit USGI A2 muzzle devices as well as Griffin proprietary mounts, and is precision-ground for minimal and repeatable point of impact shift. The unit includes a flash suppressor front cap to further reduce flash signature, a TIG fusion-welded design, an included M4SD Hammer Comp mount, shims, an over-travel stop, and a silencer pouch. It is full-auto rated on barrels of 10.5 inches and longer.

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