LNIB Mega Arms Megalithic upper This is a monolithic keymod upper with integrated bubble level. Comes with all factory parts. I also have a Rainer Arms Match 16" barrel w/Rainer Match low pro gas block and gas tube. I put an A2 flash hider on it for you so you can feel good about yourself. Total is $860 shipped If you want, I have a PRI gas Buster charging handle as well. For sale to buyer of the upper only.