I have a 300 Blackout upper for sale, $650. Spikes tactical upper, McGowan 16" fluted match grade stainless steel barrel, Troy 11" alpha rail, YHM carbine length gas block with a YHM flip up front sight. Only 50 rounds through the barrel. No trades, cash only. Located in Waynesboro and prefer a ftf transaction but can ship. Email me for pics at firstname.lastname@example.org.