SIG Sauer MPX 9mm Carbine 16" Barrel, 35-Round, Black - Model RMPX-16B-9-35

The SIG Sauer MPX 9mm carbine is a gas-piston-driven modern rifle built specifically for PCC (pistol-caliber carbine) competition and shooters who demand reliability without compromise. This 16-inch barrel model pairs the proven MPX platform—trusted by champions like Lena Miculek—with purpose-built competition features: a Timney single-stage trigger for crisp, predictable breaks; a slim M-LOK handguard that echoes M4 ergonomics; and a 3-chamber compensator designed to manage recoil and muzzle rise. Whether you're running matches, training for speed and accuracy, or simply want a dependable 9mm carbine that handles like a rifle, the MPX delivers without requiring aftermarket modifications to shine.

The 5-position telescoping and folding stock lets you dial in length of pull or collapse the rifle for storage and transport. At 6.63 pounds fully assembled, it's nimble enough to move quickly through stages yet solid enough to stay put when you call for a shot. The hard-coat anodized receiver and carbon steel barrel are built to handle thousands of rounds of training and competition cycling. The included 35-round polymer magazine gives you serious round count between reloads—a meaningful edge on the clock.

M-LOK slots along the forend make it easy to add lights, lasers, or support gear without gunsmithing. Threaded muzzle (M13.5 x 1mm) accepts suppressors or other muzzle devices if you want to customize further. The 1:10 twist rate is engineered for 9mm ballistics, and the semi-auto action is straightforward and reliable. This is a no-fuss platform: buy it, shoot it, compete with it, trust it.

Key Features

• Gas-piston operating system for smooth cycling and reliability
• Timney single-stage trigger for clean, predictable breaks
• Slim M-LOK handguard with M4-style ergonomics
• 5-position telescoping and folding stock for adjustable length of pull and compact storage
• 3-chamber recoil-reducing compensator to manage muzzle rise and recoil impulse
• Hard-coat anodized receiver for durability and corrosion resistance
• Threaded muzzle (M13.5 x 1mm) for suppressors and accessories
• 35-round polymer magazine included
• M-LOK accessory slots for lights, lasers, and other gear

Specifications

Frequently Asked Questions

Is the MPX good for PCC competition?

Yes. The MPX platform has a proven track record in PCC matches, and this model is specifically configured for competition with a Timney trigger, compensator, and slim handguard—all designed for performance out of the box without modifications. Champions like Lena Miculek have run the platform at the highest level.

What magazine does this carbine use?

The MPX uses MPX-specific magazines. One 35-round polymer magazine is included with this rifle.

Can I add a suppressor to the MPX?

Yes. The barrel is threaded M13.5 x 1mm, so you can attach a compatible suppressor or other muzzle device.

What accessories can I attach with M-LOK?

The slim M-LOK handguard has slots for mounting optics, lights, lasers, bipods, and other tactical gear. Attach whatever you need for your shooting discipline or use case.