Maxim Defense Industries MD9 904S, Semi-automatic Rifle, SBR, 9MM, 4.5 Barrel, MLOK Handguard, Anodized Finish, Flat Dark Earth (Arid), BCM Gunfighter Grip, Maxim SCW Stock, ALG Defense Combat Trigger, Radian Raptor Charging Handle, Radian Talon Ambidextrous Safety, 1 Magazine, 33 Rounds MXM-49713 When you're looking for Maxim Defense ingenuity in a new standard AR-9, the MD-9 is your answer. The MD-9 was engineered to fit the growing demand for cutting-edge AR9 style rifles for today's Military and commercial market. For increased comfort and versatility every MDX features their free-floating barrel with their custom handguard. These handguards provide a monolithic-like upper receiver platform and M-Slot compatibility.