Not content with excellence, our design team took the M4SD-K through a series of enhancements to bring you a superlative 5.56mm QD sound suppressor. Forged in the fires of Mount Doom, the new M4SD-K (Mod 3) begins life as approximately nine inches of 17-4 stainless, tool steel, bar stock. We have found 17-4 to provide markedly superior wear resistance, as compared to softer high nickle alloys of good reputation in industry. The heart of the M4SD-K suppressor is a billet machined "chassis" (tube body), with integrated muzzle device bearing surfaces, which houses the internal components.

Not content with excellence, our design team took the M4SD K through a series of enhancements to bring you a superlative 5.56mm QD sound suppressor. Forged in the fires of Mount Doom, the new M4SD K (Mod 3) begins life as approximately nine inches of 17-4 stainless, tool steel, bar stock. We have found 17-4 to provide markedly superior wear resistance, as compared to softer high nickle alloys of good reputation in industry. The heart of the M4SD K suppressor is a billet machined “chassis” (tube body), with integrated muzzle device bearing surfaces, which houses the internal components.