Sale HK 51000384 MR556 Upper Receiver Kit 5.56mm for AR15/M16/M4 MSRP: $2,499.00 Was: Now: $2,179.00 Add to Cart
Sale HK 51000384 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 HKs piston and pusher rod system. This system utilizes a piston and a pusher... MSRP: $2,499.00 Was: Now: $2,179.00 Add to Cart
