Sig Sauer MPX 9mm Flat Dark Earth Pistol with KeyMod Rail and 4.5 Inch Barrel

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. A full-length picatinny rail allows for solid, consistent mounting of optics and targeting lasers. The MPX K PSB features a 4.5″ barrel, and a short aluminum KeyMod handguard with handstop.

Firearm Features

• Short Aluminum KeyMod Handguard
• Ambi AR-Style Controls
• Handstop Included
• Short-Stroke Gas Piston Operation
• (1) 30 Rd Mag