5.56x45mm NATO Upper Receivers

Faxon AR-15 Duty Series SOCOM Upper Receiver Assembly 5.56x45mm NATO 16" Barrel

Faxon AR-15 Duty Series SOCOM Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Suppressor Ready

San Tan Tactical Everything But The Lower AR-15 5.56x45mm NATO 16inch Upper Receiver Rifle Length 1-7 Twist 1/2x28 Threads Black

Vktr Indrustries VK-1, 5.56mm, 11.5 Barrel w/ A2 Flash Hider, Black, Complete Upper Receiver

Q Sugar Weasel 5.56x45mm NATO 16 inch Upper Receiver Blk

Resolute(R) Mk4 5.56 Nato Assembled Upper Receiver W/P&W Brake - Resolute Mk4 5.56nato Assembl Upper 14.5''''bbl W/P&W Brake Blk

CMMG Dissent Upper Group Mk4 5.56mm 16.1" Anodized Blk

CMMG Dissent Upper Group Mk4 5.56mm 10.5" Anodized Blk

CMMG Dissent Mk4 5.56mm 16.1in Upper Group 1-7 Twist 1/2 X 28 TPI .750in 25.5in Tungsten

CMMG Dissent Mk4 5.56mm 16.1in Upper Group 1-7 Twist 1/2 X 28 TPI .750in 25.5in Armor Black

Fortis Manufacturing Billet Dust Cover Carbon Fiber Dark Earth FDE

CMMG DISSENT Mk4 AR-15 10.5" CM 5.56MM Upper Receiver w/ 9.6" M-LOK Handguard - Tungsten

WARRIOR SYSTEMS WSM15 7.6" AR15 Upper | Armor Black

Global Ordnance Can Launcher Upper w/ 300-Rounds of 5.56 Blanks

Dirty Bird AR-15 Stripped Upper Receiver - OD Green Anodized

M16A1 Assembled Upper Receiver - Without M4 Feedramps

M16A1 Stripped Upper Receiver - Without M4 Feedramps

M16A1 Stripped Upper Receiver - M4 Feedramps

M16A1 Assembled Upper Receiver - With M4 Feedramps

Dirty Bird 14.5 Pin & Weld Government V2 5.56 M-LOK CA Compliant Complete Upper - Black

Dirty Bird 16" Side-Charging 5.56 NATO Govt M-LOK Complete Upper

Dirty Bird 16" 5.56 NATO Govt M-LOK Quad Rail Complete Upper

Dirty Bird 16 Government Midlength 5.56 M-LOK Left-Handed Complete Upper

Dirty Bird 14.5 Pin & Weld Government V2 5.56 M-LOK Upper Assembly