This is my second build :) and boy do i love ADC's. This is my original way to build ad lee sin which is lane build but can work with jugnle if you want, and imo it is op as soon as you hit blood thirster. i have personally 1v5ed with this character and build combination and won :D but obviously it was really only 1v3+1v1+1v1 still :D. so try out this build and upvote please :)

Now i know this will cause some controversy but i really think 20% crit chance runes are the way to go for every ad character, adc or tank. How long are your runes useful for with the average AD+armour+magic resist. well the answer is pretty much the first 10 minutes, with crit runes you could potentially crit 2 or even 3 time in the first little scrap down bot or top and get first blood.

ONCE YOU HAVE 1 PHANTOM DANCER AND 1 AGAILITY CLOAK (ON THE WAY TO INFINITY EDGE) YOU HAVE 68% CRIT CHANCE!!!!

This build doesnt need much explanation it is just to point out lee sins adc potential and its not hard to see how good it is that lee sin can pretty much do a sion ult every 10 seconds with 2 blood thirsters. This build is for people already using lee sin looking for another viable option for building him.