Gungans have two distinct weapons they use in their army. Both can be used to hurl Energy Balls. Although these weapons are considered as exotic weapons, Gungans who have the Weapon Proficieny (simple weapons) feat are treated as proficient in both weapons.
Atlatl

Exotic Weapon
Saga Edition Core Rulebook, page 121.
Cost: 50 Weight: 1.5kg Availability: Rare
Damage: 2d4 Stun: — Type: Bludgeoning
A Gungan weapon, the atlatl adds speed and power as an extension of a throwing arm, allowing the user to hurl energy balls farther than with just an unaided toss. If forced into close combat, the wielder can use the atlatl as a clublike melee weapon.Cesta

Exotic Weapon
Saga Edition Core Rulebook, page 121.
Cost: 100 Weight: 1.8kg Availability: Rare
Damage: 2d4 Stun: — Type: Bludgeoning
Another Gungan weapon, the cesta is a flexible pole used to hurl small energy balls, it can also be used as a stafflike melee weapon.Reach weapon.