Polymer Dual Magazine Fast Clip for MP7 Series Airsoft AEG GBB - Dark Earth

"While these MAY work for your mags, I only uses them on mine because I bought 3.
I run the MAG 100round plastic MP7 Magazines.

The clamps must be completely disassembled before installing. If you want to use the clamped mags you will have to remove the oh-so non functioning posistion pin (that is supposed to let you pull the mags and rotate them.). After you have done THIS, you will notice that while the 2 bolt side of the clamp can be threaded and tightened; but the single bolt side cannot. YES, I tried a longer bolt.

Pros: Seem to be the only clamps I can find for the MP7
Look cool on the website
Will function if you are willing to modify

Cons: Fitment is trash
Mag not in the gun swings freely (or you dont remove pin if you have Solomon Grundy hands)
Pricing remonicent of Magpul.
Allows you to put 2 100 round MP7 mags in a double M4 mag pouch (when 3 will fit without.