Identical to suppressors fielded by US Department of Defense, the NG6.8X51Spear-QD LO-TOX design minimizes toxic fume exposure from ejection port featuring a monolithic core construction for machine gun strength and durability. Sig Sauer's Clutch-Lok secure mounting system delivers a consistent and reliable attachment for long lasting reliability. The NG6.8X51Spear-QD features a flash reducing end cap that is designed to lower the overall fire signature of the suppressor.