FEATURES-Caliber: 5.56 Nato-16.1" barrel-1:7" thread-Direct impingement system-Proprietary DI bolt carrier group-Modular one piece free-float rail-Fully ambidextrous lower controls-Enhanced fire control group-A2 Birdcage flash hider-Ambidextrous sling mount-Ambidextrous charging handle-Adjustable compact stock-Magpul® MOE+® grip-Overall length: 32"-35.25"