Sig Sauer MPX 4.5" -9MM Copperhead

Sig Sauer MPX 4.5" -9MM Copperhead features black finish upper and lower receiver and a 4.5" barrel with a threaded on flash hider. The Copperheads are the slim lightweight series that come with a one piece upper receiver and M-LOK handguard. Unconventional design, unmatched performance, and familiar AR handling. The SIG MPX redefines the submachine gun category with a new level of operator safety, in-field adaptability and proven reliability in the harshest environments. Completely ambidextrous, the SIG MPX is great for left- or right-handed shooters with its dual-sided selector switch, magazine release, charging handle and bolt release. The SIG MPX operates from a fully-closed and locked rotating bolt, offering enhanced reliability and safety in use. A short-stroke gas piston allows the SIG MPX to run all weights and brands of 9mm ammunition with no adjustments to the gas valve.