These are fairly good mag pouches. They will hold a total of three mags, which isn't a lot to most pouches, but I prefer single stack pouches myself. I am using them for Magpul E-Mags and P-Mags, and they fit fine. It's a little hard to get in at first, but it'll get better over time. It has MOLLE webbing on them so that you can attach more stuff to them. They have six MOLLE straps on the back, which is both good and bad. They take an area of 4 by 6 MOLLE webbing.
Single stack (less bulky)
Fits P-Mags and E-Mags
MOLLE on the front and in the back (not really sure why in the back)
Six MOLLE straps, so it is super secure and won't wiggle around
Seems pretty well stitched
Open top with bungee
E-Mags and P-Mags are hard to fit at first. I filled them with E-Mags and let them self for a while to let it stretch out. Since they fit so perfectly, you could even cut off the bungee and they'd still be very secure.
Six MOLLE straps. It takes a while to put it on