Dual Strike (D20 Modern Feat)
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Your combat teamwork makes you a more dangerous foe.
Prerequisite: BAB +3, Combat Reflexes
Benefit: If you and an ally both flank an opponent, you gain a +4 bonus on your attack roll.
Normal: The standard flanking attack roll bonus is +2.
Special: An armsman or duelist may take this as one of their bonus feats.