The SIG SAUER MCX platform has long served as the proving ground for some of the most advanced rifle systems in the world. Built on the battle-tested legacy of the MCX Virtus, the MCX-SPEAR-LT represents the next evolution—engineered for reduced weight, enhanced handling, and uncompromising performance.

Chambered in 5.56 NATO and featuring an 11.5” cold hammer forged barrel, the MCX-SPEAR-LT is optimized for CQB, duty use, and suppressed operation while maintaining exceptional accuracy and reliability. The short-stroke gas piston system ensures cleaner operation, reduced recoil impulse, and consistent performance in harsh environments.

The rifle’s lightweight alloy handguard improves maneuverability without sacrificing rigidity, while the SIG Flat Blade Match Trigger delivers a crisp, consistent break for enhanced precision. Fully ambidextrous controls allow seamless operation for both right- and left-handed shooters, making the platform adaptable across teams and mission profiles.

Designed with modularity in mind, the MCX-SPEAR-LT supports interchangeable barrels and features a Rocksett-secured SIG QD suppressor-ready flash hider, making it suppressor-optimized straight from the factory. An M-LOK forend provides flexible mounting for mission-essential accessories, while included flip-up iron sights ensure redundancy in any operational environment.

Each rifle ships complete with a cleaning kit, dual-point adjustable QD sling, and a body-colored forward assist, delivering a turnkey duty rifle ready for immediate deployment.

The SIG SAUER MCX-SPEAR-LT sets a new standard for modern fighting rifles—combining reduced weight, superior ergonomics, and proven SIG durability into one of the most capable 5.56 platforms available today.

Built for professionals. Trusted by end users. Proven by SIG SAUER.