The SIG SAUER MCX-Spear SBR rifle is achieving the Army’s goal of advanced performance while also exceeding the requirements for durability. The MCX-Spear SBR rifle chambered in 6.8x51mm offers a new level of modularity, allowing for caliber conversion between 6.8x51mm, 7.62x51mm and 6.5 Creedmoor and 13′ or 16″ barrel length options. Featuring a non-reciprocating side charging handle; a rear charging handle; fully ambidextrous controls; a 2-Stage Matchlite Duo Trigger; SLX/SLH QD Flash Hider; Push-Button Folding Magpul SL-M Stock; and M-LOK Handguard with Easily Adjustable 2-Position Gas Valve.