Heavy wgt bbl w/ permanently installed flash suppressor to bring length up to 16" legal minimum. Caliber .223/5.56mm with 1/9" twist with an Olympic Arms aluminum fore-end. Collapsable stock. Rail attachement bar with Sure-fire light and laser sight. Comes with 3 30-rd magazines (2 brand new Colt magazines. Verified PREBAN by the LOW serial number 0041XX. Excellent condition.