For sale is a KAC APC Upper with less than 60 rounds of FGMM 175gn through it. The charging handle it comes with was replaced with a Raptor Ambi. The Muzzle threads were turned down to 5/8-24 by D Wilson so I could use a Q cherry bomb. This allows the use of many other muzzle devices. I'm asking $3850 shipped via Zelle, Venmo or PayPal F/F. Any/All questions, please message me.