Building on the legacy of its predecessor, the SIG SAUER MCX Spear-LT IR Semi-Auto Rifle represents the pinnacle of the AR platform. It's built around SIG's short-stroke gas piston operating system, which runs cooler and cleaner than the traditional direct impingement system found on most AR-15s. It's equipped with fully ambidextrous controls, catering to both left- and right-handed shooters and ensuring seamless operation and fast access to all critical functions in the field. The advanced barrel technology and upgraded SIG 2-stage Matchlite Duo trigger deliver impressive accuracy with a trigger pull that performs well beyond mil-spec. But what really sets the Spear-LT IR apart is its Gen II Cerakote finish that reduces infrared signature under thermal and night view, keeping you stealthy. Additional features include SIG's telescoping/folding stock, M-LOK handguard, and cold hammer-forged barrel. The MCX Spear-LT IR Rifle is compatible with all MCX-LT barrels and handguards. Gen II Cerakote IR finish reduces infrared signature under thermal and night view Short-stroke gas piston operating system Compatible with all MCX-LT barrels and handguards Fully ambidextrous controls Cold hammer-forged barrel with QD flash hider SIG 2-stage Matchlite Duo trigger Telescoping/folding stock M-LOK handguard