Sig Sauer MPX K (PMPX4B935) – 9mm Luger, 35+1, 4.5" Threaded Barrel

The Sig Sauer MPX K (PMPX4B935) is a compact, high-capacity 9mm carbine built for speed, modularity, and real-world performance. Chambered in 9mm Luger with an impressive 35+1 capacity, the MPX K pairs a 4.50" black nitride threaded barrel with a lightweight M-LOK free-floating handguard, giving you a short, maneuverable platform that accepts a wide range of accessories — from lights and grips to stabilizing braces or suppressors.

The black hard-coat anodized aluminum receiver features a full-length Picatinny rail for optics and backup sights, while ambidextrous controls and ergonomic black polymer grips make the MPX K comfortable and intuitive for all shooters. The included folding, pivoting contour brace keeps the package compact for storage or transport, yet stable and ready for rapid follow-up shots when deployed.

Ideal for competitive PCC divisions, home defense, or high-volume range training, the Sig MPX K delivers proven Sig engineering in a compact, adaptable format. Built for durability and zeroed-in performance, it’s ready to accept your preferred accessories and suppressor options.

• Manufacturer: Sig Sauer
• Model / SKU: PMPX4B935 – MPX K
• Caliber: 9mm Luger
• Capacity: 35+1 rounds
• Barrel: 4.50" black nitride, threaded for muzzle devices/suppressors
• Handguard: Free-floating M-LOK handguard for accessories
• Receiver: Black hard-coat anodized aluminum with full-length Picatinny rail
• Brace: Black synthetic folding, pivoting contour brace (MPX K configuration)
• Grip: Black polymer ergonomic grips
• Controls: Ambidextrous safety and controls for left/right shooters
• Purpose: Compact carbine/PCC for defense, competition, and range use