These things are really cool. They look awesome. The perk is really neat. Except for the fact that it only works for smgs. I like smgs, but they're not the most effective weapon class. I also like some diversity in a loadout, and while running dual-endless-ammo smgs sounds like fun, it wouldn't be great in a lot of situations. Why not make it so it reloads any weapon that's been stowed for a certain amount of time? That would make it a lot more useful, and more exotic-y.