Needs review
Source: Complete Warrior

Description: With a chosen weapon, you know how to hit where it hurts.

Prerequisites: Weapon Focus, Base Attack Bonus +4

When using the weapon you selected, you gain a +4 bonus on the roll to confirm a threat.

Special

A fighter may select Power Critical as one of his fighter bonus feats. You can gain Power Critical multiple times. Each time you take the feat, it may be with a different weapon or the same weapon. If you take it with the same weapon, the effects of the feats stack.