Sig Sauer MPX 9mm Pistol with KeyMod Rail and Telescoping Stock


In stock

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, telescoping 3-position brace and a short aluminum KeyMod handguard with handstop.

Firearm Features

  • Telescoping 3-Position Pistol Stabilizing Brace
  • Short Aluminum KeyMod Handguard with Handstop
  • Ambidextrous AR-style Controls

Firearm Specifications

  • Model: MPX K PSB
  • Caliber: 9mm Luger
  • Barrel Length: 4.5″
  • Overall Length: 22.5″
  • Twist Rate: 1:10″
  • Forend Type: Alloy
  • Trigger Weight: 5.5-9 lbs
  • Trigger Type: Mil-Spec
  • Stock Type: Telescoping 3-Position Brace
  • Magazine: (1) 30-Round Polymer Magazine
  • Grip Type: Polymer
  • Receiver Finish: Hard Coat Anodized
  • Width: 2.4″
  • Height: 8″
  • Threads: M1.5x1mm
  • Accessory Rail: KeyMod
  • Operating System: Gas Pistol
  • Weight: 6.2 lbs.

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