2A ARMAMENT 7.5" MLok 5.56 Complete Upper

TACFIRE Complete Upper 5.56 NATO M-Lok 1/2x28 Blk Nitride

AERO PRECISION M5 Complete Upper 22" 6.5 CM SS Fluted SM15 Ano

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

AERO PRECISION M5 20" .308 CMV Complete Upper Receiver w/ ATLAS S-ONE M-Lok 15" Handguard

Spikes Tactical 5.56 NATO M4 LE Upper 16-inch Black LE

Rock River Arms AR-15 Complete Upper Receiver 450 Bushmaster 16" Stainless Barrel

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