Five-seven mrd 5.7×28 blk 10+1., 2-10rd mags | accessory rail., Caliber: 5.7 x 28mm, Barrel: 4.75″, Capacity: 10 + 1, Finish: Black, Sights: Adj. Rear Combat Sight, StockFrameGrips: Polymer Frame Black Polymer Polymer Frame, Magazine: 2 10 Round