Sig Sauer MPX K 9mm 4.5 Inch Pistol with Brace

Description

Configured as an AR-style pistol, the Sig Sauer MPX K combines a semi-automatic action with a 4.5 inch cold hammer forged carbon steel barrel. This 9mm Luger model includes a SIG PCB folding brace, aluminum M-LOK (Modular Lock accessory mounting) handguard, and a polymer grip. We see it as a compact range platform for shooters who want a familiar layout with a gas piston operating system.

Key Specifications

• The pistol is chambered in 9mm Luger for use with the stated cartridge.
• The semi-automatic action uses a gas piston operating system for its cycling design.
• The barrel measures 4.5 inches and is made from cold hammer forged carbon steel.
• The receiver is constructed from aluminum for the specified frame material.
• The exterior uses a black hardcoat anodized finish.
• The handguard features M-LOK accessory mounting for compatible attachments.
• The pistol has a M13.5 x 1 mm threaded muzzle.
• The trigger is a Timney single-stage design.
• Overall length is listed as 22.25 inches.
• The unloaded weight is listed as 5 pounds.

The folding PCB brace gives this configuration its stated compact layout, while the aluminum handguard provides the listed M-LOK mounting interface. The polymer grip and black finish keep the materials and exterior treatment straightforward. Fixed sights are not included, so the top of the pistol remains open for the sighting setup selected by the owner. We stock the MPX K for shooters who want a compact 9mm platform with a piston system and Timney trigger. The Sig Sauer MPX K remains the focus.