Shop 4,464 Deals on Upper Receivers

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

Brenton USA Upper Receiver Scout .350 Legend 18in Barrel 9/16x24 Thread 1-16 Twist Harvest MarbleKote Harvest MarbleKote

CMMG Banshee Mk47 7.62x39mm 12.5in Gen 2 Complete Upper Receiver MT Carbine 1-10 Twist 5/8x24 TPI Charcoal Green

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

TRYBE Defense Complete Upper Receiver AR-15 5.56x45mm NATO 16in 5R Barrel 1-7 Twist 15in M-LOK Rail A2 Flash Hider BCG and CH Nitride Black

Next Level Armament AR-10 .308 Caliber Upper Receiver Left Hand Black

XTS Complete Upper Receiver w/o BCG w/ 12in Rail AR-15 223/5.56 24.75in 16.5in Carbine 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish OD

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 Purple

XTS Complete Upper Receiver w/o BCG AR-15 223/5.56 24.75in 16.5in Carbine 1-8 Twist 1/2x28 Thread M-LOK Bird Cage Black Nitride Finish Purple

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

EDEMO Chiappa Firearms Charles Daly Upper Receiver AR-15 to AR .410 Smooth Bore 2.5 in Conversion 19 inch Barrel Black

Range Tool AR-15 A2 Stripped Upper Receiver Black

EDEMO TRYBE Defense AR-15 Pistol Complete Upper Receiver 5.56mm 10.5in 1-7 Twist A2 Flash hider EDEMO2

FM Products FM-15 .223 Wylde 12.5in Mid Length Gen 2 Upper Reciever 1-8 Twist Rate 1/2x28 TPI Black

Primary Weapons Systems MK116 MOD 2-M Upper Receiver 7.62x39 16.1in 1-10 Twist FSC 30 3-Setting Adjustable Gas System Black

Primary Weapons Systems MK111 MOD 2-M Upper Receiver 7.62x39 20.75in 1-10 Twist Black

EDEMO 2A Armament Balios-Lite Gen 2 Upper Receiver Black MILSPEC 2A-MCBU-4 EDEMO1

USED CBC Industries AR-15 Rifle Kit .223/5.56 16in 1-8 15in Keymod AR-15 Handguard/Rail BCG Charging Handle AR-15 Buttstock Kit Black EDEMO7

CBC Industries AR-15 Upper Assembly 300AAC 16in 1-8 15in M-Lok AR-15 Handguard Black 160-051

DEMO 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

OP Exclusive Moriarti AR-15 Upper Receiver Assembly 5.56x45mm NATO 10.5in Carbine Government M-LOK 1-7 1/2x28 Diamond Cut Free-Float Handgrd Slanted

Aagil Arms Complete AR-15 .223 Wylde Upper Assembly 16in Stainless Steel Length Carbine 1-8 Twist w/ 15in M-Lok Anodized Black Medium

Aagil Arms Complete AR-15 5.56 NATO Upper Assembly 16in Barrel Length Carbine 1-8 Twist w/ 15in Key Mod Anodized Black Medium

DEMO Iron Horse Upper Hand-Guard Kit Black IH-UK1