The GMR-15 by JP rifles takes the popular 9mm cartridge and puts it into the equally popular AR15 platform. This AR configuration surpasses most other weapons in its class with its sheer versatility, accuracy, reliability and function. The GMR-15 has outstanding applications in home defense, competition shooting, and truck gun usage. This particular model has been outfitted with PSC-17 Upper Receiver Assembly, this top-of-the-line upper billet utilizes top and side charging systems with a compact design to reduce weight. The PSC-17 also has an oversized brass deflector and minimized ejection port. Features: Hand Guard: JP MK III Hand Guard System Barrel: JP Supermatch air-gauged, button-rifled, cryogenically treatedLower Receiver: Dedicated Billet Upper Receiver: PSC-17 Grip: Hogue Pistol GripStock: Hogue AR-15/M-16 Overmolded Collapsible Stock 3-port 9mm compensator1/2x36" threaded muzzleRed Short Thermal DissipatorGlock Magazine CompatibleSCS2-9mm Gen 2 Carbine Silent Captured BufferCompetition/Recreational 3.0-3.5 lbs Trigger JP Enterprises GMR-15 9mm Rifle with Dual Charge, Dedicated Billet Upper and Billet Lower JPPSC17/GMR-15