I have a few new in wrap stripped Mega Arms billet upper receivers, these are the uppers to match up to their billet lowers. They have the m4 feed cuts, have several available. $200 each shipping will be extra $6.00 for priority mail, and upper receiver parts kits for $26 I just received several more of the forged uppers, these are the uppers that match up to the forged gator lowers or any standard ar-15 lower. These uppers have the feed cuts and are stripped for $120.00 each. All new and ready for your build.