3e SRD:Weapon Specialization
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Weapon Specialization [Special]
Benefit: Choose one type of weapon. The character is especially good at inflicting damage with this weapon. The character adds +2 to all damage inflicted with the weapon the character has specialized with. If the weapon is a ranged weapon, the target must be within 30 feet.
Special: The character can gain this feat multiple times. Its effects do not stack. Each time the character takes the feat, it applies to a new weapon.