The best weapon: (3 shots bosses) (Lvl. 133)
Stock: Reversal stock
Grip: Bounce grip
Trigger: 5x Burst
Mag: Spinshooter Mag (The one that shoots while reloading)
Barrel: Quad Barrel
Ammo: NUKES
*If you only have 4 or 5 of these at once, it's ok once you get the final one, the damage multiplies x10 at least*
The only hard part is the noise/the blue arrows b/c you can't see your guy in the explosions.