M4 Ris

I'm looking for a good metal bodied M4, Must be rear wired, With a metal RIS, Metal bodied, Basicaly high end (ish) For the one I'm happy with I have a Highly upgraded Aug to trade, There has only been a 1000 rounds trough it since the upgrades have been done ( About a month ago) It has a One piece stainless steel cylinder and cylinder head, An (Air seal) air nozzle, Full metal tooth piston ,Ball bearing piston head, Ball bearing spring guide, 13:1 steel gear set,Ball bearing bushings, The gearbox plate has been removed and a bolt now keeps the gearbox in place to allow a mini 9.6 or a 7.4 lipo to be used. It is firing at 292 fps at about 1000 RPM, It come with Four 170 round transparent mid caps, One original hi cap and One black 80 round black mid cap it might be 70 or 110 not sure I will also fire in a 7.4 lipo or a 9.6 mimh your choice, pics to follow. The four 170 round mid caps are brand new,
http://pix.ie/onlyaplinker/album/479291