Talk:Weapons/@comment-6567499-20130421190743/@comment-5857935-20130422070936

Armor penetration is a decent all-around mod when you don't care enough to actually slot the appropriate element, or against Grineer always. Unless I'm fighting Infected I use armor penetrating on many of my weapons.

Serration (or the appropriate damage mod) is pretty much a neccessity on every weapon. On higher difficulty levels it can make a huge difference on the amount of shots-to-kill when using spammy weapons, and push slower-firing weapons into the 1-shot-kill realm.