Special Weapons?
 

I was reading the descriptions for some of the weapons, and I found a few that claimed to have alternative modes. The Rebels' repeater rifle supposedly has a charge shot mode, and the Seperatists' radiation launcher and the Imperials' mortar launcher claim to have two modes of fire: explode on contact or bounce. Do these modes exist, and how do I use them?

Rebel's blaster rifle has no charged shot. That is a mistake on the website.

Imperial Pilot and Droid Pilot mortar/radiation launchers can be charged for bounce mode by holding down the fire key. However I don't find the bounce mode very useful, because there's little to no splash damage, so it's best when it explodes on contact with an enemy.

TK is right. The rifle does not have a charged shot mode but the mortar/radiation has a bounce mode by just tapping the fire button.

i think the rebel sniper has a charged shot on it.

You've thought wrong. :)

The clone piolet has a charge shot on the useless lightning gun thing

makes it slightly less useless