The MCX platform has long been SIG SAUER’S breeding ground for developing the best rifle system in the world through extensive testing, continued innovation and customer feedback. Now SIG SAUER introduces the latest evolution with the MCX-SPEAR IR, based on its predecessor the MCX Virtus the MCX-SPEAR IR has a lightened handguard with attachment screws for additional rigidity and a lightened profile barrel with improved accuracy. Other features of the MCX-SPEAR IR include an ambidextrous bolt catch and release on its lower, minimalist stock for maximum compact foldability and AR15 style trigger compatibility. The MCX-SPEAR IR, has once again set the bar for modular weapons technology.