MK18 Mod1 upper (pre-owned)

Pre-owned in very good condition. MK18 Mod1/CQBR upper. This upper uses all Daniel Defense parts *except* for the barrel and gas block. Daniel Defense upper (with DD MK18 factory markings), Daniel Defense GI charging handle, Daniel Defense BCG, Daniel Defense RIS II-MK18 rail, Daniel Defense flash hider (cut for NT4 compatibility), but has an unknown brand 10.5" barrel and gas block. It has an unknown but visibly low round count.