HECKLER & KOCH AR15 11" UPPER RECEIVER

HECKLER & KOCH AR15 11" UPPER RECEIVER

Brand: Heckler & Koch
SKU: 51000385
2499.00 USD In stock Buy at Merchant

The MR556 upper receiver kit includes A4 features and allows Mil-Spec 5.56mm AR-style rifles to be retrofitted with HK's piston and pusher rod system.

  • This system virtually eliminates malfunctions common in direct-impingement gas systems.
  • It functions reliably and shoots accurately with various 5.56mm or .223 ammunition.
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  • Default Title — 2499.00 USD — In stock

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