Shop 4,462 Deals on Upper Receivers

Luth-AR A1 .223 Rem/5.56 Striped Upper Receiver w/ M4 Feed Pump, Hardcoat Anodized Black - UR-01-E3-M4

Radian Weapons Model 1 Complete Upper OD Green .300 AAC Blackout 9 Barrel

LMT Defense MRP-L Quad Assembled Upper Receiver 5.56/.300 Blackout

Aero Precision M5 Complete Upper Receiver 24in 6.5 Creedmoor SS Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black

Radian Weapons Model 1 Complete Upper Brown .300 AAC Blackout 9 Barrel

LANTAC USC Side Charging Stripped AR-15 Billet Upper Receiver Aluminum Matte

Radian Weapons Model 1 Builder Kit OD Green 5.56 14 MLOK Handguard

Aero Precision M5 Complete Upper Receiver 20in 6.5 Creedmoor SS Rifle Barrel w/ATLAS R-ONE 15in M-LOK Handguard Anodized Black

Aero Precision Complete Upper Receiver M4E1-T .300 16in Blackout Barrel 15in M-LOK ATLAS S-ONE Handguard Anodized Black

Aero Precision LR-308 M5E1 Upper Assembly 308 Winchester 20" Barrel 16.6" EM Gen2 Enhanced Handguard Black

Aero Precision M4E1-T Complete Upper Flat Dark Earth 6.5 Grendel 20 Barrel

Aero Precision Complete Upper Receiver M4E1-T 10.5in 5.56 Barrel 9in M-LOK ATLAS S-ONE Handguard Anodized Black

Radian Weapons 9" Complete Upper .300 AAC Blackout 1:5, Black - R0027

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, OD Green - Rugged Tactical - R0614

Daniel Defense 5.56 NATO 11.5" 1:7" Bbl Contract Overrun Upper Receiver w/DD4 7.0 Handguard WEBGB-07419-URG

Hatsan USA .22 Cal Air Rifle Upper Assembly, Black

CMMG Resolute Mk4 AR-15 Complete Upper Receiver 6.5 Grendel 16" Barrel

Del-Ton Complete Upper 5.56 16 Barrel Mid-Length

Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - PATROLSLUPPER13.7556

Bushmaster Bravo Zulu Upper Assembly 16in 350LGND Black

Colt Firearms M4 LE6933 Upper 5.56 11.5 Barrel

Luth-AR Lightweight Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 26in 16in Light Weight Carbine 1x9 1/2x28Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Bull Rifle Kit Minus Lower Receiver w/Fixed Stock .223 29in 20in Bull Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized Manganese

Aero Precision Standard Assembled AR-15 Upper Receiver Aluminum Olive Drab