RADICAL FIREARMS Complete Upper Assembly 6.5 Grendel 16" 15" MHR

Alexander Arms Hunter 18" Upper 6.5 Grendel 1:8, Black - UHU65BL

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

AERO PRECISION M4E1-T 5.56 NATO 11.5" Complete Upper Receiver | Black

Odin Works 20" 6.5 Grendel Rifle-Length Barrel, w/ BCG & Gas Block B-6.5-20-R-TG-BCG

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

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

Odin Works ULTRAlite AR-15 16.1 Intermediate-Length Gas 6.5 Grendel 1:8 Stainless Steel Barrel with Tunable Gas Block And BCG