Tiger Tacticals MOLLE SMG mag pouch
Double Stick Magazine Pouch AD6008
Holds two (2) standard 30 round SMG Magazines (eg, Mp5, etc)
Velcro closure
Molle on back
Drainage gromett
Constructed with 1000 denier DuPont cordura and double stitched with nylon thread
$35 CDN
Daves Army Surplus
Tactical Tailor TT MP5 Double Mag Pouch $23.99
https://dstactical.com/index.php?cPath=81_96_115
Those are just 2 that I found in 3 minutes of searching off this site alone. And Im a MP5 user my self. When I get my fill setup most likly its all comming from Tiger Tactical. They seem to have a pretty good selection.