Results for Heckler and Koch Upper Receivers

HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 11" Barrel

HK MR556 A4 AR-15 Complete Upper Receiver 5.56x45mm NATO 16.5" Barrel

HK MR762 A4 LR-308 Complete Upper Receiver 7.62x51mm NATO 13" Barrel

HK MR762 A4 LR-308 Complete Upper Receiver 7.62x51mm NATO 16" Barrel

Heckler and Koch MR556A4 URK Complete Upper 5.56 / .223 Rem 14.5 Barrel SBR

Heckler & Koch HK MR556 Upper Receiver Kit w/Bolt, Buffer Spring, M-LOK, & Barrel Assembly 81000584

416/Mr556 Ejection Port Cover Ral 7008 - Hk416/Mr556 Ejection Port Cover Ral 7008

HK USA MR556-A1 Match 5.56 Upper Receiver Kit

Heckler & Koch MR762 A4 7.62 NATO Complete Upper Receiver Kit - 13"

Heckler & Koch MR762 A4 7.62 NATO Complete Upper Receiver Kit - 16"