Top theory online seems to be an ego 11 SL with composite lightweight parts like the etek3
But then wouldn't that make it cheaper than the 11 like the LT is cheaper than the AM?
Other suggestions are 'combat system' something, maybe for woodball gear.
I'm just gonna throw it out there without having watched the video or having any info on it at all, that it's another SL ego/geo but made (partially) from Carbon...