I thought you get extra crit rate on any weapon when you get it to very high. o: Not suree~

You can upgrade a license on any weapon.

i know you can upgrade a license on any weapon but it went higher on that one than the normal ones. normally the highest is blah dominator (+35%) but i got the crossbow to gold slime destroyer (+40%) and got +1% crit, something i didn't get on my bow when i got mara pirates dominator.

bonus crit% only applies for mob from burning hill and more

and high lvl mobs will hv more bonus crit% too

so if i complete another license for a monster in burning hill would i get more crit%? and do grave robbers count as burning hill?

Yea. Different licenses can go up to different stages.

ooohh, why didn't anyone tell me this before D:

Grave robber counts.. but u only get bonus crit% for 1 license....

(so if u completed grave robber AND gold slimes, u'll still only get 1% bonus)

D: no fair

Yea they don't stack. But the good thing is that the highest can net you 5% extra crit ^_^