Home » HK MR556 51000385 Complete Upper Receiver Assembly 5.56mm Piston Kit for AR-15
HK MR556 51000385 Complete Upper Receiver Assembly 5.56mm Piston Kit for AR-15
HK MR556 51000385 Complete Upper Receiver Assembly 5.56mm Piston Kit for AR-15

HK MR556 51000385 Complete Upper Receiver Assembly 5.56mm Piston Kit for AR-15

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UPC 642230270220
Brand HK
Condition New