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This is a Heckler & Koch MR556 Upper Receiver Kit. Heckler & Koch is now offering the much anticipated civilian model of the popular HK416 upper. This MR556 match grade upper receiver assembly comes complete and ready to attach onto any standard AR-15 lower receiver. The short stroke gas piston design ensures cooler, cleaner operation of this upper for reliabilty and less time scrubbing residue out of the receiver after extended shooting sessions. The flat-top upper receiver and free floating quad rail system allows for plenty of space for mounting sighting devices and any other accessories the owner chooses. Upper receiver assembly also ships with a carbine length buffer spring and heavy buffer. This upper requires a full profile hammer to function.
*Copy of Photo ID required for purchase of any uppers.
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