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HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4 by Hk -

Product Description

Product Features & Specifications HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4 This kit includes a complete upper receiver/barrel assembly, allowing Mil-Spec 5.56mm AR-style rifles to be retrofitted to HK's piston and pusher rod system. This system utilises a piston and a pusher r

HK 51000385 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4

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Brand Hk
Hk

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