Weapon Proficiency

Weapon Proficiency
You are proficient with a particular kind of weaponry.
Prerequsites:
Benefit: Choose one of the following weapon groups: advanced melee weapons, heavy weapons (which includes vehicular and starship weapons), pistols, rifles, and simple weapons. You are proficient with all weapons of the selected groups. Alternatively you can choose this to become proficient in a single exotic weapon.
Normal: If you wield a weapon with which you are not proficient, you take a -5 penalty to your attack rolls.
Special: You can gain this feat multiple times. Each time you take the feat, it applies to a different weapon group or exotic weapon.