AngryGun have emailed over photos of their MP7 mag for KSC compatible GBB builds. There’s no product link yet but prototype photos are attached (and on their Facebook page):
Angry Gun MP7 GBB magazine for KSC/KWA is almost ready. It’s now at it’s final stage.
We did make some improvement on it, we have adjust the flow of the gas and we did manage to tweek the feeding lip a bit so it feeds a lot smoother.
Best Regards, Jeffrey Chan, (Sales Manager, AngryGun)