Sig Sauer MPX K 9mm PCB Folding Braced Pistol 4.5" Barrel - 35 Rd - Coyote

Sig Sauer MPX K 9mm PCB Folding Braced Pistol 4.5" Barrel - 35 Rd - Coyote

Experience the gold standard in modular sub-gun performance with the SIG SAUER MPX K 9mm Pistol in Coyote Tan. Built for extreme reliability and professional-grade durability, the MPX K features a closed-bolt, short-stroke gas piston operating system that virtually eliminates gas blowback into the shooter's face—making it an exceptional platform for suppressed shooting. Compact, fast-handling, and highly adaptable, the MPX K delivers sub-machine-gun speed and control in a commercial pistol package.

This upgraded MPX K configuration comes factory-fitted with an ultra-crisp, single-stage flat trigger co-developed by Timney Triggers and SIG SAUER, specifically engineered to withstand the demanding cycle rates of sub-gun platforms. Its 4.5-inch carbon steel barrel features M13.5x1 LH threads for instant suppressor mounting, housed inside a modular alloy M-LOK handguard. Outfitted with a side-folding SIG PCB (Pivot Contour Brace) that allows full firing capability even when folded, a 35-round polymer magazine, and a hard-coat anodized, Coyote Tan finish, the MPX K is the ultimate compact defensive firearm.

Features

Short-Stroke Gas Piston System:
Closed-bolt gas piston operating system ensures ultra-clean, reliable cycling without blowback gas or debris venting toward the shooter, optimized for suppressor use.

Timney Co-Designed Single-Stage Trigger:
Factory-upgraded flat trigger developed in partnership with Timney, delivering a fast, crisp break and rapid reset engineered to endure heavy sub-gun operation.

SIG PCB Folding Brace:
Features a low-profile side-folding Pivot Contour Brace (PCB) for compact storage and transportation, fully operable in the folded position.

Alloy M-LOK Handguard:
Lightweight alloy forend provides easy mounting for tactical lights, lasers, and foregrips, with quick-change modularity for different handguard lengths.

Threaded 4.5" Carbon Steel Barrel:
Precision 4.5-inch carbon steel barrel with a 1:10 twist rate and metric M13.5x1 LH threads, perfect for attaching muzzle devices and sound suppressors.

Specifications