So looking for ways for a mid level monk to overcome cold iron DR, while sticking with the martial arts theme, I came across this weapon in the APG.
Brass Knuckles: These close combat weapons are designed to fit comfortably around the knuckles, narrowing the contact area and therefore magnifying the amount of force delivered by a punch. They allow you to deal lethal damage with unarmed attacks. You may hold, but not wield, a weapon or other object in a hand wearing brass knuckles. You may cast a spell with a somatic component while wearing brass knuckles if you make a concentration check (DC 10 + the level of the spell you're casting). Monks are proficient with brass knuckles and can use their monk unarmed damage when fighting with them
They are listed under Simple Weapons - Unarmed Attacks on the table in the book, and have the "Monk" special property.
I have a couple questions on how they would work for society play.
1. Is there any reason they can't be made masterwork, and give a +1 to hit?
2. Would Monk's "Ki Fist" ability work with them, so that they would count as magical for purposes of DR and incorporeality.
