300 Blackout Upper Receivers

PSA 8.5" Pistol-length 300AAC Nitride 7" Lightweight M-Lok Upper with BCG & CH

PSA 7.5" 300AAC Blackout Nitride 9" Lightweight M-Lok Upper With BCG & CH

PSA 16" Pistol-Length 300AAC Blackout Nitride 15" Lightweight M-Lok Upper - With BCG & CH - 5165450142

PSA 10.5" Pistol-Length 300AAC 12" Lightweight M-Lok Slant Upper - With BCG, CH, & MBUS Sight Set - 5165449836

PSA 8.5" Pistol-length 300AAC Blackout Nitride 7" Lightweight M-Lok Upper With BCG & CH - 5165449777

PSA 8.5" 300AAC Blackout Nitride 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit - 5165449761

PSA 10.5" Pistol Length 300AAC Nitride 10.5" M-Lok Upper - With BCG & CH - 5165449628

PSA 16" Pistol-Length 300AAC Blackout Nitride 15" Lightweight M-Lok Upper - With BCG & CH - 5165448932

PSA 10.5" Pistol Length 300AAC Blackout Nitride 9" Lightweight M-Lok Freedom Upper - With BCG & CH - 516446429

Maxim Defense MDX 508 300 BLK Mil-Spec Complete Upper - 8.5"

Machine Gun Armory MGA .300 Blackout Conversion Kit. MPN MGA556300.CB

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol 4150 Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Light HBAR Barrel 1-8 Twist 9in M-LOK Free Float Hand Guard Flash Can

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol 4150 Moly Steel Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5 inch Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7 inch M-LOK Free Float Hand Guard

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 7.5in Pistol Moly Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2 Flash Hider

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Elite Complete Upper Receiver .300 Blackout 7.5in Pistol Length 4150 Light HBAR Barrel 1-8 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Rifle Lower Parts Kit .300 Blackout 16in Pistol Light HBAR Barrel 1-8 Twist 14in M-LOK Free Float Hand Guard A2 Muzzle

Ghost Firearms Upper Receiver Pistol Lower Parts Kit .300 Blackout 10.5in Pistol Light HBAR Barrel 1-8 Twist 11in M-LOK Free Float Hand Guard Flash