Shop 4,476 Deals on Upper Receivers

American Tactical .450 16" Barrel Complete Upper - 15MS450BM

Angstadt Arms MDP-9 5.85" Upper 9mm 1:10 Twist Rate and M-LOK Rail - Black Upper Assembly with Charging Handle - AAUMDP0906

VKTR Industries VK-1 5.56x45mm 16" 1:7 M-LOK Rail w/ BCG & CH, Black - V-4027-3410-001-RP

Daniel Defense DD5 V3 16" Upper 7.62x51mm 1:11 M-LOK, Black

Tacfire 20" Complete Upper Assembly .308 Win 1:10, Black - BU-308-20

ODIN Works Billet Upper Receiver FDE

Del-Ton Inc 16" Complete Upper Assembly 5.56x45mm 1:7, Black - DT1040

Del-Ton Inc 16" Heavy Carbine Rifle Kit 5.56x45mm 1:9, Black - RKT101

Del-Ton Pre-Ban 16" Classic Upper 5.56x45mm 1:9 Mid-Length, Black

Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Patriot Brown - 1815

Patriot Ordnance Factory Minuteman 16.5" Complete Upper 5.56x45mm 1:8, Black - 1652

Aero Precision AR15 Complete Upper Flat Dark Earth / Black 5.56 / .223 Rem 10.5 Barrel

Alexander Arms Tactical 16" Upper 6.5 Grendel 1:8, Black - UTA65

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Black - Advanced Tactical - R0428

Radian Weapons Model 1 Complete Upper Gray .223 Wylde 14.5 P&W Barrel

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Flat Dark Earth - Advanced Tactical - R0613

Radian Weapons Model 1 14.50" MOE Upper .223 Wylde 1:8 M-LOK Rail Mid-Length with BCG and CH, OD Green - Reliable Performance - R0467

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Brown - Tactical Performance - R0612

AR-15 Radian Weapons Builder Kit in Distinctive Radian Gray - Tailored Excellence - R0436

Aim Sports 16" Complete Upper Assembly 5.56x45mm 1:8, Black - AR5CUB3

Spikes Tactical .223 Rem/5.56 16" Barrel Complete Upper Assembly, Mil-Spec Phosphate Coated, 12" Black Free Float SAR3 Rail - STU5035-S2S

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA3M16BT00

Troy Industries .223 Remington Upper with 16" Barrel, Black - SUPGA4S16BT00

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Armor Black - 55BB40BAB