There's a variant of the Mossberg 500 with a grip like the one you're thinking of. 
[img]https://s-media-cache-ak0.pinimg.com/originals/a7/cc/9c/a7cc9ca9de58dfceffae53fd5f527721.jpg[/img]
The first gatling guns were crank based, here's what they looked like.
[img]https://i.ytimg.com/vi/t-NVdKXsWtg/maxresdefault.jpg[/img]