Prone Shooter (Combat)
While prone, you use the ground to stabilize your aim while using a crossbow or firearm.
Prerequisite: base attack bonus +1.
Benefit: If you have been prone since the end of your last turn, the penalty to your Armor Class against melee attacks made against you is reduced to -2. In addition, the bonus to your Armor Class against ranged attacks made against you is increased to +6.
匍匐射手已经改成这个了