I assumed this was a bug since during the HC arms week the weapons you focused had random rolls, but now i am starting to think this was an intentional choice since there is no acknowledgement or mention of it. If its actually intentional, why have random rolls for the weapons in one event, and then change it the next event? In the TWID there was mentions of interesting perk combos you could get on the new rapid fire slug, but even that one is a static roll, which as far as i remember, dont even have any of the perks that was mentioned in the TWID. IDK i just feel its an annoying way to do things, and it dont really make any sense considering that most of these guns are either already craftable, powercrept or outdated.