Sig MCX Spear-LT 11.5"

The MCX-Spear LT represents the latest evolution of Sig Sauer's piston-driven platform, incorporating lessons learned from the XM5/XM250 Next Generation Squad Weapon program that won the U.S. Army contract. The 11.5-inch variant strikes an optimal balance between compactness and ballistic performance in 5.56 NATO, maintaining sufficient velocity for reliable terminal effects while offering superior maneuverability compared to 16-inch rifles. The Spear LT has been adopted by both the British SAS and U.S. SOCOM units, validating its design for the most demanding operational environments.

Key improvements over the previous MCX Virtus include a lightened handguard and barrel profile while maintaining durability, return to AR-15 trigger compatibility allowing users to install their preferred trigger packs, and a new coyote brown finish. The cold-hammer-forged barrel features Sig's SL muzzle device designed for quick-detach compatibility with their SLX and SLH suppressors. The adjustable short-stroke gas piston system ensures reliable function with or without suppressors, while the ambidextrous bolt catch and release join the already ambidextrous safety and magazine release for true bilateral operation.

In rigorous testing, the Spear LT 11.5-inch has proven completely reliable through over 1,000 rounds without cleaning using factory ammunition. Accuracy averages just over 2 inches for five-shot groups at 100 yards, with Sig's Elite Performance ammunition producing 1.67-inch groups - exceptional for a short-barreled rifle. The flat-blade match trigger provides a crisp, clean break with light reset that reviewers consistently praise. The rifle maintains the MCX platform's legendary reliability while offering a flatter shooting impulse than previous generations, making rapid follow-up shots easier. At $2,730, it's a premium investment that delivers professional-grade performance and modularity.