Made and constructed from the same materials as the "S" version; Only 8.9" in length, but offers a true sound reduction of 31dB firing standard 7.62 ammunition; Multi-rated (up to .300 Win Mag); Uses the industry best QD system for fool-proof quick one handed mounting; Mount features Nitride finished 17-4 stainless steel construction; Detachable front cap with an integrated flash hider; Cerakote finish for ultimate corrosion protection; Matte Black Finish