Make sure you Use your Hextech Gunblade skill it helps alot if you do mostly u can 2 v 1 any team but if they have stun try to get yours off frist becuse stun kill jax fast

This build i use with jax no other way for him the 6th item you can get a def item like Thornmail or Banshee's Veil depnding on the team ur fighting i sometime just get another Hextech Gunblade if the fight last that long becuse most time teams surrnder i dont play jax no more becuse of that he is way to O.P and if you just want a ton of win go this rout no matter what with jax i get 20 + kills win or lose mostly win =p

I get these items becuse he get max Ability Power, Attack Damage and Max Hit Point this is the only way to get them his highest The Atma's Impaler becuse the more hp you have the more A.D you Get and with the Rabadon's Deathcap ur hp gose higher becuse more ap and and that 30% more ap is nice do you A.D get higeer becuse that too but i realy hope this helps it works for me hardly never lose with jax

you should go in Junngle sometimes after you killed and minons are pushed to Get blue to keep you mana and Cooldown up will help you alot

Gank as much as possable becuse more kills more money and most people tower hug Vs jax becuse he can q,w and that kills people fast