Shop 771 Deals on 5.56×45mm NATO Complete Uppers

HM Defense 12.50" Classic Upper 5.56x45mm 1:8 M-LOK Rail Mid-Length with BCG and CH, Black - 125MBUP556

Bushmaster 16" Classic Upper .223 Remington/5.56x45mm with 1:8 Twist Rate and M-LOK- Carbine-Length with BCG and CH- Black - 00-40011-BLK

HM Defense MonoBloc 9.5" AR-Style Upper Receiver 5.56x45mm/.223 Remington - 95MBUP556

HM Defense .223 Remington Upper with 16" Barrel, Black - 16MBUP556

HM Defense .223 Remington Upper with 16" Barrel, Black - 16MBUP556L

CMMG Dissent 10.50" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Armor Black - 55B8D86AB

Del-Ton 11.50" Classic Upper 5.56x45mm 1:9 Carbine-Length, Black

Del-Ton Pre-Ban 20" Classic Upper 5.56x45mm 1:9 Standard-Length, Black

Q LLC Sugar Weasel .223 Remington Upper with 13" Barrel, Black, Tan - ACCSW55613INUPPER

Patriot Ordnance Factory Minuteman 10.5" Complete Upper 5.56x45mm, Patriot Brown - 1817

Patriot Ordnance Factory P415 Edge 10.5" Upper 5.56x45mm 1:8 M-LOK Rail w/ BCG and CH, ODG - 01988

CMMG Dissent 10.50" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Pistol-Length with Charging Handle - Sniper Gray - 55B8D86SG

Spikes Tactical 16" Upper 5.56x45mm 1:7 Quad Rail Mid-Length with BCG, Black - Enhanced Carbine Upper - STU5035CQ2F

Sons of Liberty Gun Works SOLGW 14.50" Upper 5.56x45mm M-LOK Rail - Tactical Excellence - M4L89BSCHF14.5

VKTR Industries VK-1 5.56x45mm 13.7" 1:7 M-LOK Rail w/ BCG & CH, Flat Dark Earth - V-4027-3410-013-RP

Bushmaster QRC II LTW 16" Classic Upper 5.56x45mm NATO 1:7 Carbine Length, Black

Sons of Liberty Gun Works .223 Remington Upper with 13.7" Barrel, Black - M489UPPER13.7556

VKTR Industries VK-1 13.7" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Black - V-4027-3410-012-RP

ATI Milsport 7.50" Upper 5.56x45mm 1:8 M-LOK Rail, Black

Aim Sports 10" Complete Upper Assembly 5.56x45mm 1:8, Black - AR5CUB8

CMMG Resolute 16.10" Upper 5.56x45mm with 1:7 Twist Rate and M-LOK Rail - Mid-Length with Charging Handle - Midnight Bronze - 55BB40BMB

Radian Weapons Model 1 MOE Upper M-LOK Rail with Charging Handle, Black - Premium Tactical - R0403

Sons of Liberty Gun Works SOLGW 14.50" Upper 5.56x45mm M-LOK Rail - Precision Carbine - M4L89BSCHF14.5HUX

Lead & Steel Just As Good 18" Upper 5.56x45mm 1:7 Free Float M-LOK Mid-Length, OD Green