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 5.56 NATO 16in Right Side Upper Receiver, M4, Mid-Length, 1-7, 1/2X28, Flash Hider, Parkerized, FDE, UASCC5019556MM4161715FDESR

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver, Heavy, Pistol, 1-8, 5/8X24, Flash Hider, Parkerized, Tungsten, UASCC5029300PHB161815TNGSR

Bear Creek Arsenal BC-15 .458 SOCOM 16in Bolt Action Style Upper Receiver, Heavy, 1-14, 5/8X32, Flash Hider, Parkerized, UABA350458CHB1611487515ASR

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 .223 Wylde 16in Upper Receiver, Heavy, Carbine, 1-8, 1/2X28, Flash Hider, Parkerized, ODG, UAFC4042223WCHB161815ODGSR

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 .223 Wylde 16in Upper Receiver, Heavy, Carbine, 1-8, 1/2X28, Flash Hider, Parkerized, FDE, UAFC4043223WCHB161815FDESR

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-15 7.62x39 16in Bolt Action Style Upper Receiver, Heavy, 1-10, 5/8X24, Flash Hider, 416R, UABA355762CHB16110SS15ASR

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 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 .223 Wylde 20in Bolt Action Style Upper Receiver, Heavy, 1-8, 1/2X28, Flash Hider, 416R, Black, UABA-373-223WRHB2018SS-15ASR

Bear Creek Arsenal BC-15 .223 Wylde 10.5in Bolt Action Style Upper Receiver, M4, 1-7, 1/2X28, Flash Hider, 416R, UABA364223WCM410517SS10ASR

Bear Creek Arsenal BC-15 6mm ARC 20in Bolt Action Style Upper Receiver, Straight Fluted Heavy, 1-8, 5/8X24, Flash Hider, 416R, UABA3336MMARHB2018SSF15ASR

Bear Creek Arsenal BC-15 5.56 NATO 16in Upper Receiver, M4 Barrel, Mid-Length, 1-7 Twist, 1/2X28, Flash Hider, Parkerized, UAFC-4020-556MM41617-15TNGSR

Bear Creek Arsenal BC15 5.56 NATO 16in Right Upper Receiver, M4 Hammer Forged, Carbine, 1-7, 1/2X28, Flash Hide, Nitride, ODG, UASCC5021556CM41617MHF15ODGSR

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-15 .350 Legend 16in Bolt Action Style Upper Receiver, M4, 1-16, 1/2X28, Flash Hider, 416R, UABA360350LCM416116SS15ASR

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 7.62x39 16in Bolt Action Style Upper Receiver, Heavy Barrel, 1-10 Twist, 5/8X24, Flash Hider, Parkerized, UABA-305-762CHB16110-15ASR

Bear Creek Arsenal BC-15 .350 Legend 16in Bolt Action Style Upper Receiver, M4 Contour, 1-16 Twist, 5/8X24, Flash Hider, Parkerized, UABA-313-350LCM416116-15ASR

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-15 .350 Legend 20in Bolt Action Style Upper Receiver, Heavy Barrel, 1-16 Twist, 5/8X24, Flash Hider, Black Nitride, UABA-386-350LCHB20116M-15ASR

Bear Creek Arsenal BC-10 .308 Winchester 22in Bolt Action Style Upper Receiver, Lightweight, 1-10, 5/8X24, Flash Hider, Black Nitride, UABA-391-308RLW22110M-15ASR

Bear Creek Arsenal BC-10 8.6 Blackout 16in Bolt Action Style Upper Receiver, SOCOM Barrel, 1-3 Twist, M18x1.5, Flash Hider, Parkerized, UABA-361-8.6CSC1613-15ASR