300 Blackout Upper Receivers

Dark Storm Industries DS-15 AR-15 .300 AAC Blackout 12.5 inch Upper Receiver SOCOM Profile Pistol Length 1-7 Twist Firestorm Compensator Magpul MVG

Dark Storm Industries DS-15 Typhoon Complete Upper Receiver .300 Blackout 7.5in Barrel M4 Pistol Profile 1-8 Twist 5/8x24 Thread M-Lok FirestormType

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

Dark Storm Industries DS15 AR-15 Stripped Billet Upper Receiver Mil-Spec Hard Coat Anodize Olive Drab Green Cerakote

Dark Storm Industries DS-15 MOE AR-15 .300 AAC Blackout 16in Upper Receiver Pistol Length 1-8 Twist A2 Style Birdcage Flash Hider Olive Drab Green

Dark Storm Industries DS-15 MOE AR-15 .300 AAC Blackout 16in Upper Receiver Pistol Length 1-8 Twist A2 Style Birdcage Flash Hider FDE

Dark Storm Industries DS-15 AR-15 .300 AAC Blackout 16 inch Upper Receiver Pistol Length 1-8 Twist Non Threaded FDE

Dark Storm Industries DS-15 MOE AR-15 .300 Blackout 16in Complete Upper Receiver 1-8 Twist Threaded Black

Dark Storm Industries DS-15 Upper Parts Ejection Port Door/Pin/Spring/C-Clip Forward Assist/Spring/Pin Black

BRN-180 SCNR 300 BLACKOUT 9” COMPLETE UPPER RECEIVER ASSEMBLY

Aero Precision AR-15 M4E1-T Barreled Upper Receiver 300 AAC Blackout 10" Barrel 9.3" ATLAS R-ONE Handguard Flat Dark Earth

MCX-RATTLER LT UPPER ASSEMBLY - 6.75" 300BLK

Lewis Machine & Tool (LMT) AR-15 MRP-L M-LOK Monolithic Upper Receiver - 13.25"

Expo Arms Barreled AR-15 Upper Receiver - .300 Blackout - 8" - 7" M-LOK

TacFire .300 Blackout AR-15 Upper Receiver Build Kit with Bolt Carrier Group - 7.5"

Bear Creek Arsenal BC-15 Complete AR-15 Upper Receiver - 300 Blackout - 10.5"

Bear Creek Arsenal BC-15 Complete AR-15 Upper Receiver - 300 Blackout - 7.5"

Ghost Firearms Elite Barreled AR-15 Upper Receiver - 300 Blackout - 16" - OD Green

Q Sugar Weasel Complete AR-15 Upper Receiver - 300 Blackout - 7"

Noveske Rifleworks N4 Shorty Complete AR-15 Upper Receiver - 300 Blackout - 10.5" - Tiger Eye

Barreled Upper Receiver Assembly, 300 AAC, Blk, Silencerco, JAKL

H&R DOE 300BLK Complete Upper, Black

BLEM Harrington & Richardson 10.5" 300BLK Commando Upper

Harrington & Richardson 10.5" 300BLK Commando Upper