I use strippers because of ammo storage too. At least with AR, and can load ten per pistol mag. It still makes loading for the range simple and quick. If I take a top up out then there's no fumbling loose rounds. With Carbine, it's like stated. Two mags per stripper and simple to load. Most guys I know don't use them because they don't have the practice and fumble terribly with them. I store ammo in them to keep it organized a bit.