Shop 4,464 Deals on Upper Receivers

CMMG 5.7X28mm Banshee Upper Group Receiver 8in Charcoal Green

Wilson Combat Complete Upper Receiver Protector 300 HAM'R 16in Barrel Mid Length 1-15 Twist 5/8x24 M-LOK Q-COMP Armor-Tuff Black

Wilson Combat Upper Complete Forged 300 BLK Protector Pistol Length 16in Round Q-Comp 1-7 Twist Black Without Forward Assist Black

AIM Sports Inc AR15 Upper Receiver w/FACHDC Black Large

ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver Black

ABC RIFLE COMPANY AR .40 S&W Pistol 4in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Red

ABC RIFLE COMPANY AR9 9mm Luger Pistol 4in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Rose Gold

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Micro Pistol 5in Barrel M-LOK Handguard Upper Receiver w/BCG And Charging Handle Red

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 7in Barrel Custom 7in Slanted M-LOK Handguard Complete Upper Receiver w/BCG And Charging

ABC RIFLE COMPANY AR-15 7.62x39mm 5in Barrel Custom 5in Top Cut Custom M-LOK Handguard Complete Micro Pistol Upper Receiver w/BCG And Charging Handle

ABC RIFLE COMPANY AR-15 7.62x39mm 5in Barrel Custom 5in Top Cut Custom M-LOK Handguard Complete Micro Pistol Upper Receiver w/BCG And Charging Handle

ABC RIFLE COMPANY AR-15 7.62x39mm 10in Quadrail Handguard Complete Pistol Upper Receiver w/BCG And Charging Handle Olive Drab Green

VKTR Industries 16in VK-1 Complete AR-15 Upper Cerakote Sniper Grey

Radical Firearms AR-15 Complete Upper Assembly 16in 7.62x39 4150V HBAR Contour 1/10 Twist 10in RPR M-LOK A2 Flash Hider Black

XTS Complete Upper Receiver w/o BCG w/ 12in Rail AR-15 300 BO 24.75in 16in Barrel Carbine 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish

XTS Complete Upper Receiver w/o BCG w/ Ce Rail AR-15 300 BO 17.5in 8in Barrel 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Finish

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 17.5in 8.5in Pistol 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Silver

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 24.75in 16in Barrel Carbine 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish OD Green

XTS Complete Upper Receiver w/o BCG AR-15 300 BO 24.75in 16in Barrel Carbine 1-8 Twist 5/8x24 Thread M-LOK Bird Cage Black Nitride Finish Bronze

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 19.5in 10.5in Carbinel Government 1-7 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish OD

TRYBE Defense AR-15 Pistol Complete Upper Receiver 5.56mm 10.5in 1-7 Twist A2 Flash hider

Sons of Liberty Gun Works M4 Patrol SL Upper Receiver 10.5in FSB Combat Barrel SL Handguard A2 Midwest Combat Rear Sight No BCG or CH Black

Guntec USA AR-15 5.56mm Complete Upper Kit Black

OP Exclusive Moriarti AR-15 Pencil Upper Receiver Assembly 5.56x45mm NATO 16in Mid M-LOK 1-7 Twist 1/2x28 Thread Diamond Cut Free-Float Handgrd Tri