Jrc takedown gen3 9mm 17" bbl.17rd s&w m&p mag black< FEATURES:-Caliber: 9mm-Barrel: 17" -Twist: 1:16"-Collapsible 6-position buttstock-17-round capacity-Overall length:31" Other Features: Threaded barrel 1/2x28", blowback operating system, machined aluminum receiver, ambidextrous charging handle and ejection takedown model, accepts s&w m&p magazines, 6 position collapsible stock, commercial spec buffer tube, ar-15 pistol grip,