I guess take it as generic (low ammo) scout rifle crit build so kinda only for silly weeper and The Age Of Innovation...
Tho The Age Of Innovation's crit rate is really bad so wouldn't recommend
I do not own any of the Ultimate Scouts yet so I can't say how good the build works if you wanna do dmg with them.
One small info before you start the build you will need to use 1 Energy Activator and 10 Crystallazation Catalysts and you WILL be better off with using them on Ultimate Weapons and Desendants