I did not like the idea of having to use such a large pouch, but after trying a couple of the MOLLE mounted dump pouches, they were nearly useless for Anything bigger than M16 magazines. This was especially true when trying to dump double stacked G36 magazines, since after the first stack you'd have to do some careful arranging to fit another single magazine in.
I ordered this pouch to use with my G36 magazines, and it works very well, holding all 10 of my magazines with a little arranging. I have no problem inserting the magazines hastily, and it seems like the amount of space is endless. Moreover, the inside material is very slick and smooth, allowing my G36 magazines to slide in and out without hitching and getting stuck on the stacking pegs. The pouch also rolls up and can be secured by velcro, but I keep it unrolled and ready to be used any time I'm playing.
The drawstring on the inside of the top lip can be adjusted for any kind of magazine, and I never had any problems with magazines coming out during movement.
Holds a lot of magazines.
Drawstring on the inside keeps magazines secure.
Made of durable nylon, stitching is good.
Rolls up when needed.
Belt mounts are convenient, but I wouldn't mind actual MOLLE straps on one of these.
Large size means it hangs down halfway down my thigh, and magazines can jingle during movement.
I'd give this a 5/5, for having a very simple and effective design. This pouch does what the smaller MOLLE mounted pouches can't do.