Once a weapon mod is found, it may be applied to any and all of the weapons of the applicable type at a weapon bench. For additional information on the various mods see the notes section below. Only two mods can be applied to a weapon at a time, and the same mod cannot be applied twice to a single weapon. Available mods include high-caliber barrels, scopes, and bayonet attachments, among others.
In Mass Effect 3, Weapon Mods are used to augment any of the five types of standard weapon: assault rifles, shotguns, sniper rifles, submachine guns, and heavy pistols.
