Bear Creek Arsenal BC-15 5.56 NATO 10.5in Bolt Action Style Upper Receiver, M4, 1-8, 1/2X28, Flash Hider, 416R, UABA372556CM410518SS10ASR

Bear Creek Arsenal BC-10 .308 Winchester 18in Bolt Action Style Upper Receiver, SOCOM, 1-10 Twist, 5/8X24, Flash Hider, Parkerized, UABA-334-308MSC18110-15ASR

Bear Creek Arsenal BC-15 6mm ARC 16in Bolt Action Style Upper Receiver, M4 Barrel, 1-8 Twist, 5/8X24, Flash Hider, Parkerized, UABA-371-6MMAMM41618-15ASR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4 Barrel, Carbine Length, 1-8 Twist, 1/2X28, Flash Hider, Parkerized, FDE, UAFC-4037-556CM41618-15FDESR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4, Mid-Length, 1-7, 1/2X28, Flash Hider, Black Nitride, UAFC4000556MM41617M15TNGSR

Bear Creek Arsenal BC15 .458 SOCOM 16in Right Charg Upper Receiver, Heavy, Carbine, 1-14, 5/8X32, Flash Hide, Parkerized, ODG, UASCC5051458CHB1611493615ODGSR

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver, M4, Carbine, 1-8, 1/2X28, Flash Hide, Nitride, Tungsten, UASCC5047556CM41618MHF15TNGSR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4 Barrel, Carbine Length, 1-8 Twist, 1/2X28, Flash Hider, Parkerized, ODG, UAFC-4036-556CM41618-15ODGSR

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver, Heavy, Carbine, 1-8, 5/8X24, Flash Hider, Parkerized, FDE, UAFC4007300CHB161875015FDESR

Bear Creek Arsenal BC15 .458 SOCOM 16in Right Charg Upper Receiver, Heavy, Carbine, 1-14, 5/8X32, Flash Hide, Parkerized, Tungsten, UASCC5053458CHB1611493615TNGSR

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver, M4, Carbine, 1-8, 1/2X28, Flash Hide, Nitride, ODG, UASCC5045556CM41618MHF15ODGSR

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver, Heavy, Carbine, 1-8, 1/2X28, Flash Hider, 416R, Tungsten, UAFC4026300CHB1618SS15TNGSR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4 Cold Hammer Forged, Carbine, 1-8, 1/2X28, Flash Hider, Black Nitride, ODG, UAFC4045556CM41618MHF15ODGSR

Bear Creek Arsenal BC15 .458 SOCOM 16in Right Charg Upper Receiver, Heavy, Carbine, 1-14, 5/8X32, Flash Hide, Parkerized, FDE, UASCC5052458CHB1611493615FDESR

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver, Heavy, Carbine, 1-8, 1/2X28, Flash Hider, 416R, FDE, UAFC4025300CHB1618SS15FDESR

Bear Creek Arsenal BC-15 .223 Wylde 16in Bolt Action Style Upper Receiver, M4, 1-8, 1/2X28, Flash Hider, 416R, UABA-331-223WCM41618SS-15ASR

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver, M4 Hammer Forged, Carbine, 1-7, 1/2X28, Flash Hide, Nitride, FDE, UASCC5022556CM41617MHF15FDESR

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver, Heavy, Carbine, 1-8, 1/2X28, Flash Hider, 416R, ODG, UAFC4024300CHB1618SS15ODGSR

Bear Creek Arsenal BC-15 .300 Blackout 16in Bolt Action Style Upper Receiver, Heavy, 1-8, 5/8X24, Flash Hider, Parkerized, UABA306300CHB161875015ASR

Bear Creek Arsenal BC-10 .308 Winchester 20in Bolt Action Style Upper Receiver, Straight SOCOM, 1-10, 5/8X24, Flash Hider, 416R, UABA326308RMW20110SSF15ASR

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver, Heavy, Carbine, 1-8, 5/8X24, Flash Hider, 416R, FDE, UASCC5025300CHB1618SS15FDESR

Bear Creek Arsenal BC-15 .223 Wylde 16in Bolt Action Style Upper Receiver, Straight Heavy, 1-8, 1/2X28, Flash Hider, 416R, UABA387223WCHB1618FSS15ASR

Bear Creek Arsenal BC15 .458 SOCOM 16in Upper Receiver, Heavy, Carbine Length W/.936, 1-14, 5/8X32, Flash Hide, Parkerized, ODG, UAFC4051458CHB1611493615ODGSR

Bear Creek Arsenal BC-10 .308 Winchester 20in Bolt Action Style Upper Receiver, SOCOM, 1-10 Twist, 5/8X24, Flash Hider, Parkerized, UABA-389-308RMW20110-15ASR

Bear Creek Arsenal BC15 .458 SOCOM 16in Upper Receiver, Heavy, Carbine, 1-14, 5/8X32, Flash Hide, Parkerized, FDE, UAFC4049458CHB1611487515FDESR

Bear Creek Arsenal BC-15 6mm ARC 18in Upper Receiver, Heavy, Mid-Length, 1-8, 5/8X24, Flash Hider, Parkerized, FDE, UAFC40346MMAMHB181815FDESR

Bear Creek Arsenal BC-15 .300 Blackout 8.5in Bolt Action Style Upper Receiver, Heavy Barrel, 1-8 Twist, 5/8X24, Flash Hider, Parkerized, UABA-349-300PHB8.518-7ASR

Bear Creek Arsenal BC-15 5.56 NATO 16in Bolt Action Style Upper Receiver, M4 Barrel, 1-8 Twist, 1/2X28, Flash Hider, 416R, UABA-321-556CM41618SS-15ASR

Bear Creek Arsenal BC-15 5.56 NATO 7.5in Bolt Action Style Upper Receiver, M4 Barrel, 1-7 Twist, 1/2X28, Flash Hider, Parkerized, UABA-302-556PM47.517-7ASR

Bear Creek Arsenal BC-10 .308 Winchester 16in Upper Receiver, Heavy, Mid-Length, 1-10, 5/8X24, Flash Hider, Parkerized, ODG, UAFC4009308MHB1611015ODGSR

Bear Creek Arsenal BC-10 .308 Winchester 16in Upper Receiver, Heavy, Mid-Length, 1-10, 5/8X24, Flash Hider, Parkerized, Tungsten, UAFC4011308MHB1611015TNGSR

Bear Creek Arsenal BC-15 5.56 NATO 16in Bolt Action Style Upper Receiver, M4 Barrel, 1-7 Twist, 1/2X28, Flash Hider, Black Nitride, UABA-300-556MM41617M-15ASR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4, Carbine, 1-7, 1/2X28, Flash Hider, Black Nitride, ODG, UAFC4021556CM41617MHF15ODGSR

Bear Creek Arsenal BC15 12.7x42 18in Upper Receiver, Heavy, Mid-Length, 1-20, 49/64X20, Flash Hide, Parkerized, FDE, UAFC4031127X42MHB1812015FDESR

Bear Creek Arsenal BC-15 .300 Blackout 16in Bolt Action Style Upper Receiver, Heavy, 1-8, 5/8X24, Flash Hider, 416R, UABA356300CHB1618SSBCF15ASR

Bear Creek Arsenal BC-15 6mm ARC 24in Bolt Action Style Upper Receiver, Straight Fluted Heavy, 1-8, 5/8X24, Flash Hider, 416R, UABA3756MMARHB2418SSF15ASR