You gain proficiency with a weapon group or exotic weapon.
Prerequisites
Base attack bonus +1.
Benefit
Choose a weapon group or a specific type of exotic weapon. You understand how to use it in combat and make attack rolls with the selected weapon or weapon group normally.
Special
It is possible to gain Weapon Proficiency for a single simple or martial weapon rather than a whole weapon group. In this case, Weapon Proficiency only applies to that one type of weapon, even if the weapon is part of a larger weapon group.