The Griffin Armament M4SD muzzle devices interface with our M4SD / 30SD series of silencers and QD Blast Shield.
M4SD muzzle brake provides high efficiency recoil reduction and two
durable, sacrificial baffles for use inside M4SD /30SD sound suppressors.
CNC Machined and outside diameter ground from high strength, corrosion
and wear resistant, 17-4 precipitation hardened stainless steel. The
M4SD muzzle brake is black oxide finished. 1/2×28 threads offer
compatibility with most 5.56mm Ar-15/M-4 carbine family weapons.