HK AR-15 MR556 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16.5" Barrel

  • Product #: 194053
  • HK #: 235975-A5
  • UPC #: 642230247505
HK AR-15 MR556 Gas Piston Upper Receiver Assembly 5.56x45mm NATO 16.5" Barrel
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Only 4 in stock - order soon!
Ships tomorrow from MidwayUSA

Product Overview

HK now offers the long awaited civilian variant of the popular 416 upper. This MR556, match grade upper receiver assembly comes complete and ready to pin 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 KeyMod rail upper allow plenty of room for mounting sighting devices and any other popular KeyMod accessories the operator chooses. Upper receiver assembly also ships with a carbine length buffer spring and heavy, tungsten filled buffer.

Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.

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Product Information

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Delivery Information

Must Ship to FFL Dealer
Shipping Weight
Ships Alone
DOT- Regulated
Carrier Restrictions
  • Cannot ship via air
  • Cannot ship via USPS
  • Cannot ship to PO Box
  • Must ship to Contiguous US
HazMat Product

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