How do Rxbows actually work? +Other Delf fluff Q's

[maeglin]

I know real life repeater crossbows were crank operated, but Dark Elf Repeaters haven't got one. The only other way I can see them realistically working is by using a lever action mechanism(think winchesters), but from what I gather, they're supposed to be continuously firing, represented in game by a penalty to hit because of the recoil(or so I hear in this edition).

Other questions forthcoming as soon as I can articulate them properly.

[Arguleon Veq]

I dont think there is any fluff on it to be honest I think it must be some kind of lever action.