SIG Sauer MPX K Pistol 9mm 4.5 in PCB Brace

About this product

The SIG Sauer MPX K is a compact variant of the MPX platform chambered in 9mm with a 4.5 inch barrel. It employs a closed-bolt gas-piston operating system and ships with the SIG PCB folding brace that allows the pistol to fold into a compact configuration. The receiver finish is hard coat anodized aluminum and the barrel is cold hammer-forged carbon steel. A Timney single-stage trigger is fitted for a refined trigger feel suitable to experienced, no-nonsense shooters.

Key Specifications

• The caliber is 9mm Luger.
• The barrel measures 4.5 inches.
• The action is a Semi-Auto gas-piston operating system.
• The stock is a PCB (pivoting contour brace).
• The barrel material is cold hammer forged carbon steel.
• The trigger is a Timney single-stage.
• The thread pattern is M13.5 x 1 mm.
• The overall length is 22.25 in (565 mm).
• The weight is 5 lb (2.3 kg).

Purpose-built for shooters who need a compact, modular 9mm platform, the MPX K combines a robust gas-piston system, durable construction, and an upgraded Timney trigger in a folding-brace configuration. Its compact footprint and proven MPX architecture make it a practical option for informed buyers seeking a high-quality, transportable pistol platform.

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