A-Tech sent over these two videos. The first is talking about an upgrade for the mp7 replica and their new custom work on that model, the second video is something to do with them trying out a third party part in other pistols:
RA-TECH already released new up grade parts for KSC MP7 used, and also we
make custom work with it, below link is our test video via youtubeRA-TECH has tried the compatibility for different GBBs with Pro-Win mag, and
we made video as shown below link(RA-Tech)
