Looking for an assembled AR-15 Upper with either a 10.5" or 11.5" barrel (or a maybe a sp-1 upper with triangle hand guards I could have the barrel cut down on for cheap) for a project I want to start. Not looking to spend a lot of money. NO RAIL SYSTEMS, FLIP SIGHTS, OR ANY TAC-NINJA BS STUFF ON IT. NO OLYMPICS ARMS STUFF. Plain jane. Would prefer A3 (removable carry handle) but I can settle for an A1 or A2 style. Like I said, trying to build it on the cheap. I can get a brand new one for a real good price but I'm trying to go cheaper route and find someone wanting to part with a used one.