The SIG Sauer MCX Spear-LT IR 5.56 NATO Rifle brings premium, combat-tested short-stroke gas piston technology into a highly adaptable, full-length carbine layout. Built upon the battle-proven architecture of the MCX series, this premium platform utilizes a specialized Gen II NIR Flat Dark Earth Cerakote finish that drastically reduces your signature profile under night vision or thermal observation systems. The highly rigid, lightweight aluminum M-LOK handguard is integrated into the receiver using advanced screw anchoring to safeguard your top-rail alignment across heavy operational use. Handling is seamless under intense pressure thanks to fully ambidextrous operations—including the magazine release, slide catch, charging handle, and safety levers—paired with a crisp SIG Flatblade Match two-stage trigger. Equipped with a 16-inch cold hammer-forged barrel optimized for maximum velocity and downrange accuracy, a bufferless push-button folding and telescoping stock, and a factory-mounted suppressor-ready flash hider, this low-profile 15-round package delivers supreme flexibility and tight tracking for modern sporting and tactical deployment. Sig Sauer MCX Spear-LT IR 5.56 NATO 16" Bbl Semi Aluminum M-LOK Handguard Folding/Telescoping Stock FDE Rifle w/(1) 15rd Mag RMCX-556N-16B-FDE-15