For home storage of my mags, I use a Proximity Fuze can. They are the same length and width as a .50 cal can, but about 2 inches taller. They will hold 28 30 round mags. For the range, I use a Claymore Mine bag. It is a shoulder slung bag, with a divider in the middle, and a snap down flap. You can carry 10 30 round mags in these. I picked them up at a show a couple years ago, for $3.00 ea.