Snap Shot

This feat allows a character to react quickly to oncoming attacks with a readied personal firearm.
Prerequisite: Personal Firearms Proficiency, Point-Blank Shot, base attack bonus +2.
Benefit: A character with this feat may make an attack of opportunity with a personal firearm, such as a pistol, if the following conditions are met: the character has a readied personal firearm in hand, an attacker enters one of the character’s threatened squares, and the character is not threatened before the attacker enters the threatened square. The attack of opportunity must be made against the attacker who entered the character’s threatened square; this is counted against the total number of attacks of opportunity the character may make in a single round.
Normal: Characters may not normally make attacks of opportunity with ranged weapons, and attacks of opportunity are made against opponents who move out of a threatened square, not into them.