Shop 4,464 Deals on Upper Receivers

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group Slick Side 11.5in Carbine Green

Jacob Grey Firearms Stripped Upper Receiver Ultralight JG-15 Billet Aluminum Anodized Black

American Defense Manufacturing 300 Out 10.5 Inch Barrel M-Lok Rail Upper Reciever Midnight Bronze 10.5 in

Tiger Rock Upper Receiver AR-15 Billet Black Small

Blackout Defense Dual Taper Lock Complete Interpose Uppers 11.5in Barrel M-LOK Handguard Bronze 14461

Blackout Defense Complete Dual Taper Lock .300 AAC Upper Receiver Group Slick Side 14.5in Pistol Burnt Bronze

Blackout Defense Complete Dual Taper Lock .223 Wylde Upper Receiver Group Forward Assist 14.5in Mid FDE

Brigade Manufacturing AR Complete Upper Receiver Forged 5.56 7.5 inch Barrel FDE Charging Handle 7 inch Rail A2 Flash Hider

Del-Ton Pre-Ban M4 Profile Flat Top Barrel Assembly 14.5in Chrome Lined

CMMG MkG .45 ACP Banshee Fixed Ejection Upper Group Receiver 8in 1-16 Twist 0.578x28 TPI .750in Titanium

CMMG Upper Group Resolute Fixed Ejector MkG . 45 ACP 16.1in 1-16 Twist 0.578-28 TPI Charcoal Green

CMMG Upper Group Dissent 45 Acp 6.5in Tungsten

CMMG Upper Group Dissent 45 Acp 6.5in 1-16 Twist 0.578 X 28 TPI Titanium

CMMG Upper Group Dissent Mk47 7.62X39 16.1in 1-10 Twist 5/8 X 24 TPI .750in 26in Tungsten

CMMG Upper Group Dissent Mk47 7.62X39 14.5in P&W 1-10 Twist 5/8 X 24 TPI .750in 27.5in Sniper Grey

CMMG Dissent Mk4 .350 Legend 16.1in Upper Group 1-16 Twist 1/2x28 TPI 25.5.in .750in Sniper Grey

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

Unique-ARs Slim Hex Complete Upper Receiver Cerakote Armor Black/Anodize Black

Bilson Arms Pump Style Forward Charging Upper Assembly 300BLKFC-UA 16 inch 1-8 Twist Cerakote Sniper Green & Grey

Luth-AR 16 in Light Weight 1-7 kit minus Lower Receiver w/coll. Stock M-Lok Black Carbine

VKTR Industries VK-1 5.56x45mm NATO 13.7 inch Upper Receiver Heavy Carbine Length 1-7 Twist No Muzzle Device FDE

Radical Firearms Complete Upper Assembly 16in 300 AAC HBAR Contour 1/8 Twist 10in RPR M-LOK A2 Flash Hider Black

CMMG Resolute 300 Upper 5.7 X 28 16 Barrel with 40-Round Magazine

Seekins Precision NX8 Complete Upper .300 Blackout