Sig Sauer MPX K 9mm Pistol - 4.5 inch Barrel, Gas Piston, Ambi Controls, SB Tactical Brace, M-LOK Handguard, 36+1
This Sig Sauer MPX K stands out as a compact, gas-piston 9mm with ambidextrous controls and a quality feature set in excellent condition. It comes with a free-float M-LOK handguard, a full-length 1913 Picatinny top rail, an SB Tactical telescoping arm brace, and a flat-faced trigger. Included is a SIG MPX polymer magazine upgraded with a Taran Tactical Innovations extended base pad, along with no case.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The pistol shows minor scratches and small blemishes from light handling. The bore is clean and shiny. Barrel is too short for the handguard and would be unsafe to fire in its current configuration. A barrel extension, blast can, or suppressor will need to be installed to make this pistol operable.
What’s Included
- No case included
- 1x 36rd SIG MPX polymer magazine with Taran Tactical Innovations extended base pad installed
- M-LOK QD sling socket (installed)
The MPX K uses a closed-bolt, short-stroke gas piston system in a compact 4.5 inch barrel format. The aluminum receiver and free-float aluminum M-LOK handguard keep weight balanced while providing modern mounting options.
Controls are fully ambidextrous, including the safety, magazine release, and bolt catch, and the pistol features a flat-faced trigger and Hogue polymer grip for a clean, consistent trigger reach and secure handling.
A full-length 1913 Picatinny top rail runs the receiver and handguard for mounting optics or accessories. No sights or optics are installed. The handguard includes a flush QD sling socket that is installed and ready for use.
The SB Tactical telescoping arm brace with hook-and-loop strap provides a stable, adjustable interface. Capacity is 36+1 with the included 36-round SIG MPX magazine fitted with a Taran Tactical Innovations extended base pad.
Receiver markings include SIG logo, "SIG MPX MULTI-CAL," and "SIG SAUER INC NEWINGTON NH USA." Barrel is too short for the handguard and would be unsafe to fire in its current configuration. A barrel extension, blast can, or suppressor will need to be installed to make this pistol operable.