Upper I don't use to much anymore built based off early 2000s seal team m4. It is flat hoped with a numazu nub, Prometheus purple bucking, Prometheus 6.03 tight bore barrel. Peq box is real meaning not the fake empty ones but it does not work. Grenade launcher is fully functional same with its shell ( only 1). Sights name is unknown but is fully functional and is sighted with the gun and is a awesome sight to use. Price OBO