300 Blackout Upper Receivers

Dark Storm Industries DS-15 Typhoon AR-15 .300 Blackout 16in Complete Upper Receiver Pistol Length 1-8 Twist 5/8x24 Cerakote Copperhead Brown

Dark Storm Industries DS-15 Typhoon AR-15 .300 Blackout 16in Complete Upper Receiver Pistol Length 1-8 Twist 5/8x24 Cerakote Olive Drab Green

Dark Storm Industries DS-15 Typhoon AR-15 .300 Blackout 16in Complete Upper Receiver Pistol Length 1-8 Twist 5/8x24 Cerakote FDE

Dark Storm Industries DS15 AR-15 Stripped Billet Upper Receiver Mil-Spec Hard Coat Anodize Copperhead Brown Cerakote

MCX-SPEAR LT 9" UPPER AR CONVERSION KIT 300BLK - FDE

Maxim Defense MDX 510 300BLK Mil-Spec Complete Upper - 10.3" Urban Grey

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider 416R Tungsten

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider 416R FDE

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 1/2x28 Flash Hider 416R ODG

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 5/8x24 Flash Hider Parkerized ODG

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Carbine 1-8 5/8x24 Flash Hider Parkerized FDE

Bear Creek Arsenal BC-15 .300AAC 16in Upper Receiver Heavy Pistol 1-8 1/2x28 Flash Hider Parkerized Tungsten

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver Heavy Pistol 1-8 5/8x24 Flash Hider Parkerized Tungsten

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver Heavy Pistol 1-8 5/8x24 Flash Hider Parkerized FDE

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver Heavy Pistol 1-8 5/8x24 Flash Hider Parkerized ODG

Bear Creek Arsenal BC-15 .300AAC 16in Right Side Upper Receiver Heavy Carbine 1-8 5/8x24 Flash Hider 416R Tungsten

Bear Creek Arsenal BC15 .300AAC 16in Right Upper Receiver Heavy Carbine 1-8 5/8x24 Flash Hide Parkerized ODG

Bear Creek Arsenal BC15 .300AAC 16in Right Upper Receiver Heavy Carbine 1-8 5/8x24 Flash Hide Parkerized FDE

JARD AR Left Side Charge Upper Reciever Complete w/o Bolt Black

Grid Defense Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9 inch Octagon M-LOK Hand Guard Dimpled

Grid Defense Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 9in Octagon M-LOK Hand Guard Dimpled Flash Can

Grid Defense Complete Upper Receiver .300 Blackout 16 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 14 inch M-LOK Rail A2 Flash Hider Flat Dark

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider

Grid Defense Complete Upper Receiver .300 Blackout 10.5 inch Pistol Length 4150 Steel Light HBAR Barrel 1-8 Twist 10.5 inch Hand Guard A2 Flash Hider