Talk:Paris/@comment-72.201.246.173-20130816044623/@comment-13117751-20130816145110

People do it on all weapons.

Armor piercing is treated as an "element", so it adds extra damage.

There's alot of logistics I could go into but I'll only do that if you're still curious...will just leave a really simple explanation here:

~Armor piercing is an element

~Putting an armor piercing mod on your weapon simply makes it do more damage

~Most enemies have varying armor to most elements...meaning even if your base damage ignores armor, your ELEMENTS DO NOT. Armor piercing can bypass most enemy armor (the only exception is light infested), so it's essentially "extra armor ignoring damage". Other elements do not necessarily get this benefit.

Again, it's somewhat more complicated than that so if you want a full explanation just ask. I hope this answers your question!