OK... I know its out there but for some reason i can not find the rules on this. I might be remembering the old 3.x days about getting a bonus to melee attacking someone holding a ranged weapon, but I'm sorry i have to ask, is there a modifier to attacking someone while they are holding a ranged weapon? I know if they try and make a ranged attack while in melee that is an AOO. I am wondering this because or GM just had us go against a few firearm wielding baddies.
No, but they provoke an AoO when they fire unless they have point blank master.