Package includes 2x Polarstar F1 Engines 3x replacement nozzles 1x pack of new replacement o-rings 2x Amped airsoft internal grip lines (IGL) 1x mini FCU and 1x Standard FCU with menu toggle botton for poppet dwell settings and etc. 2x m4 style trigger units *also comes with Tech-T Gun Sav lube. (Recommended by Polarstar and Amped) Condition: one is brand new and the other is used. The brand new one will need the new o-rings installed (included in package because I’m too busy to install it myself.) the o-rings are dry and have not been lubed yet( that’s how they are sold) but after installed the F1 engine will work pretty good. The other F1 works as well but gives a few problems. (Needs trouble shooting) ————BUY AT YOUR OWN RISK———-NO RETURNS.