This new Bushmaster ACR Enhanced rifle fires the .223 round. It has a 16.5" barrel with an overall matte black finish. This semi-auto rifle has a collapsible folding stock, forearm quad rail, fully ambidextrous controls, and a picatinny receiver rail. It has a gas piston driven system, an AAC blackout flash hider, a mulit-calibered bolt assembly that easily changes from .223 to 6.8mm, and a quick change barrel system. This cool rifle has pistol grip storage, stock storage, and Magpul front & rear flip sights. It comes with sling, hardcase, and one 30 round magazine.