Jrc takedown gen3 9mm 17" bbl.17rd glock mag black< FEATURES:-Caliber: 9MM-Rate of Twist:1:16"-Finish: Black-Barrel Threads: 1/2 x 28"-Mag Capacity: 17-Mag Type: Glock-Overal Length: 31"-Blowback operating system-Machined Aluminum Receiver-Ambidestrous Charging Handle and Ejection Other Features: Threaded barrel 1/2x28", blowback operating system, machined aluminum receiver, ambidextrous charging handle and ejection takedown model, accepts glock style magazines, 6 position collapsible stock, commercial spec buffer tube, ar-15 pistol grip,