AR Parts in 5.56x45mm NATO

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

White Label Armory AR-15 WLA Home Builder Parts Kit Black

VKTR Industries Hammer Forged DI 5.56mm NATO Threaded Barrel 16in Fluted Carbine Length 1-7 Twist Nitride Black

VKTR Industries Hammer Forged DI 5.56mm NATO Threaded Barrel 10.5in Fluted Carbine Length 1-7 Twist Nitride Black

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

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 12.5" Lightweight Contour 1:7" Twist Nitride

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 16" Midweight Contour 1:8" Twist Nitride

Shaw AR-15 5.56 NATO Threaded Barrel 10.5in No Flute Lightweight Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Icon Defense Integral Gas Key BCG Black

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

Dirty Bird 14.5" 5.56 M4 Carbine Phosphate/Chrome-Lined AR-15 Barrel w/ F-Marked FSB

Dirty Bird 11.5" 5.56 M4 Carbine Phosphate/Chrome-Lined AR-15 Barrel w/ F-Marked FSB

Dirty Bird 16" 5.56 M4 Carbine Phosphate/Chrome-Lined AR-15 Barrel w/ F-Marked FSB

Dirty Bird Industries Sand-Cut Bolt Carrier Group .223/5.56 - Chrome

Dirty Bird Industries Sand-Cut Bolt Carrier Group .223/5.56 - Black Nitride

Dirty Bird Industries Enhanced Bolt Carrier Group .223/5.56 - Chrome

Dirty Bird Industries Enhanced Bolt Carrier Group .223/5.56 - TiN

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

M16A1 Assembled Upper Receiver - Without M4 Feedramps