Sig Sauer Mcx 300Blk 6.75 Sbr Blk Fold 30Rd Off Duty

The Sig Sauer MCX in .300 Blackout is a purpose-built short-barrel rifle (SBR) engineered for professionals and serious shooters who demand compact capability without compromise. This 6.75-inch barreled system pairs the inherent subsonic efficiency of .300 Blackout ammunition with Sig's proven piston-driven action, delivering reliable performance in tight quarters where maneuverability matters. The folding stock design collapses for transport and storage, making this a genuinely packable platform whether you're training, operating, or staging gear for readiness.

The MCX platform has earned respect across law enforcement, military, and civilian tactical communities for its modularity and dependability. The .300 Blackout cartridge excels in suppressed applications and performs decisively in self-defense scenarios—particularly valuable in enclosed or noise-sensitive environments. A 30-round magazine keeps you loaded for extended range sessions or sustained engagement capability.

Sig's Off Duty program recognizes the gear needs of qualified professionals, and this configuration reflects that mission-first philosophy: compact, potent, and built to endure. Whether you're evaluating a truck gun, a training platform, or a dedicated defensive rifle, the MCX .300 Blackout SBR delivers the ballistics and ergonomics you need without the footprint you can't afford.

Key Features

• Short 6.75-inch barrel optimized for .300 Blackout subsonic and supersonic loads
• Folding stock for compact storage and transport
• Piston-driven operating system for reliability and ease of maintenance
• Includes 30-round magazine
• Modular design supports Sig's extensive MCX accessory ecosystem

Specifications

Frequently Asked Questions

What is the MCX .300 Blackout SBR good for?

This is a professional-grade compact rifle suited for home defense, vehicle deployment, suppressed shooting, and training. The .300 Blackout cartridge is particularly effective with subsonic loads when paired with a suppressor, and the short barrel makes it maneuverable in tight spaces without sacrificing energy.

Does the folding stock make the rifle easier to store and transport?

Yes. The folding mechanism compresses the profile significantly, making it easier to secure in a safe, vehicle, or gear bag while maintaining full function when deployed.

What is included with this rifle?

The package includes the MCX SBR and one 30-round magazine. Optics, sights, and accessories are sold separately.

Is this rifle modular, and can I swap parts or add aftermarket accessories?

The MCX platform is modular by design and supports Sig Sauer's MCX accessory lineup. Compatibility with other manufacturers' parts depends on the specific component and interface.