The Kel-Tec SU-16A is a semi-automatic rifle chambered in 223 Rem5.56 NATO and compatible with appropriate AR-15 magazines. The SU-16A has an 18.5 threaded barrel adorned with an adjustable rear peep sight and a A2 style post front sight. A picatinny rail allows users to attach the optics of their choice while the stock holds spare magazines. The SU-16As polymer handguard folds down into a bipod and the stock folds up for easier transport. Details KEL-TEC SU-16 SEMI AUTO 223 REMINGTON5.56MM NATO 10 1 ROUNDS BLACK