300 Blackout Upper Receivers

Daniel Defense DDM4 300 S AR-15 Pistol Complete Upper Receiver 300 AAC Blackout 10.3" Barrel

AR-STONER AR-15 Pistol Complete Upper Receiver 300 Blackout 10" Barrel

AR-STONER AR-15 Complete Upper Receiver 300 Blackout 16" Barrel

AR-STONER AR-15 Pistol Complete Upper Receiver 300 Blackout 5" Barrel

POF-USA AR-15 P415 Edge Complete Upper Receiver 300 AAC Blackout 10.5" Barrel 9" MRR M-LOK Hanguard Black

One Horse OH-15 Complete Upper .300 AAC Blackout 16 Barrel SOCOM Profile

One Horse OH-15 A3 Stripped Upper Multi-Cal

CMMG Dissent MK4 Upper .300 AAC Blackout 10.5 Barrel

Dpms Kitty Kat Lower .300 AAC Blackout 7.5 Barrel

Maxim Defense Industries PDX Complete Upper .300 AAC Blackout 5.5 Barrel

Q Sugar Weasel Upper Black / Tan .300 AAC Blackout 13 Barrel No BCG

Rock River Arms Coyote Carbine AR-15 Complete Upper Receiver 300 AAC Blackout 16" Barrel

Radian AR-15 Model 1 Complete Upper Receiver 300 AAC Blackout 9" Barrel Flat Dark Earth

CMMG Resolute Mk4 AR-15 Complete Upper Receiver 300 AAC Blackout 16" Barrel

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Anodized Black

Wilson Combat AR-15 Receiver Set Anodized Black

WMD Guns Complete Upper Assembly Nib-X .300 AAC Blackout 16 Barrel

AERO PRECISION M4E1-T Complete Upper 10" .300 Blackout RM9.3 FDE

AERO PRECISION M4E1-E Complete Upper 10" .300BLK Barrel EM9.3 Ano

LANTAC Raven Billet Side Charger AR-15 Receiver Set Black

Noveske AR-15 N4 Diplomat Complete Upper Receiver 300 AAC Blackout 7.94" Barrel NSR-7 M-LOK Handguard Black

NOVESKE Chainsaw 300 AAC Blackout 10.5" Complete Upper Receiver | Anodized Black

M4e1-T 300 Blackout Complete Uppers - M4e1 300blk Assembled Upper 16''''bbl Threaded W/Rm15'''' Hg Blk

M4e1 Upper Receivers Complete .300 Blackout - M4e1 300blk Assm Upper Gov 8''''bbl Pistol-Length Threaded Blk