Sig Sauer MPX Copperhead PMPX-4B-CH-NB 9mm
The MPX Copperhead features a monolithic Elite Series Cerakote finish upper receiver and a 4.5″ barrel with an integrated muzzle brake. 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. It features a dual-sided selector switch, magazine release, charging handle, and bolt release. The SIG MPX operates from a fully-closed, locked rotating bolt, offering enhanced reliability and safety. 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.