Up for sale is a NEW in box Sig Sauer MPX P-9-KM pistol.  I am the original owner of this firearm and purchased it nearly 10 years ago.  It is new in the box and unfired with everything included from the factory plus 4 additional Sig Sauer 30 rd magazines (5 total).

This is a beautiful pistol which was discontinued a number of years ago and still remains new in the box just as it left the factory.

**Additional barrels, handguards, stocks, braces and accessories available and in stock at the Sig webstore.

$2,600 plus actual shipping.

Unconventional design, unmatched performance, and familiar AR handling. The SIG MPX with KeyMod Rail 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.

Firearm Features

  • Reliability and Adaptability
    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.
  • M1913 Railed Back
    Easily add the side-folding SBX Pistol Stabilizing brace with the M1913 railed back.

User-Changeable 8" Barrel with A2 Compensator
Available in 8" barrels that can be easily converted to multiple barrel lengths for in-field adaptability. The A2 compensator reduces muzzle flip by optimizing gas venting.

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: MPX
  • Caliber: 9mm Luger
  • Barrel Length: 8"
  • Barrel Material: Carbon Steel
  • Overall Length: 17"
  • Trigger: Mil-Spec
  • Trigger Weight: 5.5 - 9 lbs.
  • Barrel Twist Rate: 1:10"
  • Forend Type: Alloy
  • Grip Type: Polymer
  • Receiver Finish: Hard Coat Anodized
  • Overall Width: 2.36"
  • Height: 8"
  • Threads: M13.5 x 1 mm
  • Accessory Rail: KeyMod
  • Operating System: Gas Piston
  • Weight: 5.5 lbs.
  • Sights: Frt./Rr. Flip up