FM-9 9mm 6" Belt Fed AR-15/M16 Upper Receiver — Optics Ready

FM-9 9mm 6" Belt Fed AR-15/M16 Upper Receiver — Optics Ready The Freedom Ordnance 9mm belt-fed AR-15 upper receiver has been designed, tested, and manufactured to drop on to any mil-spec AR-15 or M16 lower receiver. A magazine block is dropped into the magazine well from the top before putting on the upper receiver. This provides an attachment point for the belt bag and houses the ejector; no tools are required. Features Heat treated and QPQ black nitride finish on all steel components for extended durability Black anodized billet aluminum components Steel receiver rails Optics ready Removable bolt weight to adjust for variances between “hot” or “light” ammunition Includes: Upper receiver unit 6" barrel A2 flash hider 150 round belt bag 150 heat-treated steel links Magazine block Specifications Caliber: 9x19 NATO Barrel Length: 6 in. Belt Bag Capacity: 150 rounds Operation: Disintegrating link blowback belt fed system Muzzle Thread: 1/2-28 T.P.I. standard Lower receiver, grip, and stock not included. For warranty information, contact Freedom Ordnance.