Shop 4,464 Deals on Upper Receivers

Grey Ghost Precision Complete Upper 6.5mm Creedmoor 32.5in 22in Contour 1-10 5/8x24 M-LOK Black

Aero Precision AR-15 5.56x45mm NATO Complete Upper Receiver w/ No Forward Assist 14.7in 5.56 Mid Pencil Barrel 12in M-LOK ATLAS R-ONE Handguard

CMMG Resolute Mk3 8.6 Blackout 16.1 inch Upper Receiver CMM

CMMG Mk10 10mm Banshee Upper Group Receiver 8in Charcoal Green

CMMG Upper Group Dissent 45 Acp 16.1in Sniper Grey

CMMG UPPER GROUP BANSHEE GEN 2 MK47 7.62X39 12.5IN COYOTE TAN

Brenton USA Upper Receiver Tracker .22 Nosler 22in Barrel 1/2x28 Thread 1-8 Twist Midnight MarbleKote Midnight MarbleKote

Brenton USA Upper Receiver Scout .300 Blackout 18in Barrel 5/8x24 Thread 1-8 Twist Harvest MarbleKote Midnight MarbleKote

TRYBE Defense Magnite AR-15 5.56x45mm NATO 16in Complete Upper Receiver Rifle Length 1-8 1/2x28 Black

TRYBE Defense Magnite AR-15 .223 Wylde 16in Complete Upper Receiver Mid Length 1-8 1/2x28 Black

Luth-AR 16 in Light Weight 1-7 kit minus Lower Receiver w/fixed stock KeyMod Black Rifle

Wilson Combat Complete Upper Receiver Ranger 300 HAM'R 16 inch Barrel Mid Length 1-15 Twist 5/8 24 Thread M-LOK Handguard Q-COMP Armor-Tuff Black

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

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

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

ABC RIFLE COMPANY AR 9mm Luger 16in Barrel w/12in Quadrail Handguard Upper Receiver w/BCG And Charging Handle 1-8 Twist A2 Style Muzzle Brake Nitride

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Rifle 16in Barrel Custom 15in Top Cut Hybrid M-LOK Handguard Complete Upper Receiver w/BCG And

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 10in Barrel Custom 10in Slanted M-LOK Handguard Complete Upper Receiver w/BCG And

ABC RIFLE COMPANY AR-15 5.56x45mm NATO 16in Barrel 12in Quad Rail Upper Receiver 1-8 Twist 1/2x28 A2 Style Muzzle Brake Nitride Cerakote Sniper Grey

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

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

CMMG DISSENT Mk4 300BLK 16.1in Upper Receiver 1-7 Twist 25.5in 5/8x24 TPI .750in Coyote Tan

CMMG DISSENT Mk4 300BLK 16.1in Upper Receiver 1-7 Twist 25.5in 5/8x24 TPI .750in Charcoal Green