SIG MPX Description
9mm Para. cal., converts to .357 SIG or .40 S&W cal., closed, fully locked short stroke pushrod gas system, 16 in. free float barrel with permanently attached muzzle brake, 30 shot mag., ambidextrous magazine release, MPX Reflex sight, telescoping or folding stock, pistol grip, ambidextrous safety selector, extended carbon fiber rail adaptable handguard (disc. 2015) or aluminum KeyMod handguard (new 2016), monolithic upper receiver with integral M1913 rail, AR-style controls, rear charging handle, matte black or FDE (mfg. 2017 only) finish. Mfg. mid-2013-2018.