Noveske Marked VLTOR MUR Upper Receiver - Black - Open Box

LBE Unlimited AR-15 Upper Receiver Assembly, Black - ARUPPER

Black Rain Ordnance Flat Top Milled Upper Receiver, Black - BRO-MUR-2

VKTR Industries VK-1 13.7" Upper 5.56x45mm 1:7 M-LOK Rail with BCG and CH, Armor Black - V-4027-3410-004-RP

Larue Stripped Upper Receiver, Black

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

Noveske N9 RECON Upper 9mm 16 Barrel w/ Tri-Lug

Noveske AR-15 Chainsaw Upper Receiver Assembly 5.56x45mm NATO 16" Barrel NSR-15 M-LOK Handguard Black