Shop 4,464 Deals on Upper Receivers

CMMG Mk10 10mm Banshee Upper Group Receiver 8in Tungsten

CMMG Mk10 10mm Banshee Upper Group Receiver 8in Titanium

Brenton USA Upper Receiver Scout .223 Remington 18in Barrel 1/2x28 Thread 1-8 Twist Autumn MarbleKote Autumn MarbleKote

Brenton USA Upper Receiver Scout .223 Remington 18in Barrel 1/2x28 Thread 1-8 Twist Foliage MarbleKote Foliage MarbleKote

Brenton USA Upper Receiver Scout 6.8 SPC 18in Barrel 5/8x24 Thread 1-10 Twist Foliage MarbleKote Foliage MarbleKote

Brenton USA Upper Receiver Scout .450 Bushmaster 18in Barrel 11/16x24 Thread 1-24 Twist Harvest MarbleKote Harvest MarbleKote

Sons of Liberty Gun Works East India Starter Kit Combat Grade 10.5in .300 AAC Blackout Black

ABC RIFLE COMPANY AR-15 Sleek Billet Stripped Upper Receiver Cerakote White

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

ABC RIFLE COMPANY AR9 9mm Luger Rifle Billet 16in Barrel M-LOK Handguard Complete Upper Receiver w/BCG And Charging Handle Cerakote Black

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

ABC RIFLE COMPANY AR-15 .223 5.56 Complete Build 16in Barrel 15in Lightweight Hybrid M-LOK Handguard Upper Receiver 1-10 Twist 1/2x28 A2 Style Muzzle

ABC RIFLE COMPANY AR-15 .223 5.56 Complete Build 16in Barrel 15in Lightweight Hybrid M-LOK Handguard Upper Receiver 1-10 Twist 1/2x28 A2 Style Muzzle

ABC RIFLE COMPANY AR-15 .223 Remington/5.56x45mm NATO Pistol 7.5in Barrel M-LOK Handguard Complete Pistol Receiver w/BCG And Charging Handle Sniper

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

TRYBE Defense AR-15 Magnite Go Fast Ultra Lightweight Stripped Upper Receiver FDE Flat Dark Earth AR15MGFSU-FDE

CMMG Banshee 300 Upper .22 LR 5 Barrel 25-Rounds

Wilson Combat Upper Complete Forged 300 HAM'R Ranger Mid Length 16in Round Q-Comp 1-13 Twist Black Black

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

Radical Firearms Complete Upper Assembly 10.5in 12.7x42 .936 1/20 Twist 9in MHR M-LOK Panzer Brake Black

American Defense Manufacturing 5.56 12.5 Inch Barrel M-Lok Rail Upper Reciever Olive Drab 12.5 in

Luth-AR .308 24 in Bull Barrel Complete Upper Barrel Receiver Assembly M-Lok Black 24

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

Tiger Rock AR-15 Complete Upper Receiver 5.56mm 24in 16in Barrel M4 Carbine 1x8 Twist 1/2x28 Thread 10in Quad Rail Handguard Brake Nitride Anodized