Wow looks like big improvement on packing method....
RA-Tech made a video on it.
The burst fire mode seem a bit unreliable (some times it fire double instead of three)
The paint on magazine easily wears off (looks worse than VFC)
It looks like they removed it, I can't find it anymore.
They did a recoil testing on it.
EDIT: here was the link, they switch to private
https://www.youtube.com/watch?v=yVU2WPjf6So