You have mastered armor-piercing weapons.
Prerequisite: Base Attack Bonus +1
Benefit: When using a piercing weapon, you gain a +1 bonus to attack against opponents wearing medium armor and a +2 bonus to attack opponents wearing heavy armor.
Special: For purposes of this feat, natural armor values from +5 to +7 are treated as medium armor and values of +8 or more are treated as heavy armor.
Advanced Feats: The Cavalier’s Creed