I'd say mine would definetly be:
2 Gator Pros (1 slot each, great melee damage)
Auto Shotgun (2 slots, good for spraying distant rivals and fairly common ammo)
Vehicle (1 slot, whatever is the best one you have for range should be there.)
Explosive (1 slot, to be used in emergencies: a dirty trick for when you're gonna lose a fight.
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