This factory demo Benelli MR1 Tactical rifle fires the .223 round. It has a 16" barrel with an overall matte black finish. This piston-driven system incorporates a gas port located just forward of the chamber, where the gases are hotter and cleaner, resulting in less fouling and more reliable cycling. This cool rifle has a flattop picatinny receiver rail, a ghost ring sight, a tri-railed forearm, and a rubber pistol grip. It comes with manual, box, and one 10 round magazine. It takes AR-15 magazines. This rifle carries a full factory warranty. It is Benelli model #11800.