
Allthough I'm sure there's a better gun out there to do this with, let's just pretend we're going to do this with a Longshot, modded with Capt. Slug's Shotgun Foregrip. You attach a grooved rod to the grip, and a design similar to K Barker's Clip design. The diffrence is that this way, with each cycle of the grip, the gear is engaged on the pull backwards (moving the clip up) and disengaged on the push forwards. This way, using some fiddling with the gear ratios, you can cycle the clip upwards with each motion you'd normally do. (Obviously, the LS already uses magazines, but the same idea should be applicable to other guns)