Sig Sauer's Suppressor line up is intended to meet the demands of the shooter no matter what the environment is and the SLX556C-QD is no exception. This suppressor has a multi-flow path that exhausts gasses at a higher rate"" resulting in lower toxic fumes venting from the ejection port. The SLX556C-QD has a Clutch-Lok mounting system with an intuitive tactile locking ring and infinite radial locking positions. It's constructed of a monolithic core for strength and durability as well as flash reducing end cap design. The SLX is a performance based suppressor and was only designed to run supersonic ammunition.