I have what you are looking for. I have a Model one sales 20 inch flat top upper complete with bolt carrier charging handle A2 flash hider flip up front and rear sights 4 rail gas block free float tube really low round count only 25 rounds though it. I have over 750.00 into it i would take 550.00 for it. I also have a 15 rd DPMS mag brass & bullets and a set of lee reloading dies i would throw in for 50.00 more thats another 118.00 in extras. I will post a pic if you are intersted.