PREM version

version weapons (or just premium weapons) are weapons that do not have a or Black version, but instead come with a whole host of bonuses, which include and are currently limited to:
 * Free augmentation
 * Free augmentation respec
 * 50% bonus xp per kill
 * 50% bonus mastery progress
 * Permanent inventory size increase by 1 slot
 * One premium for each character when bought