I also have one of these (not in stock form anymore). I didn't chronograph it out of the box, but after installing a new metal body it chronies at 345fps with .2g BBs. The barrel is brass, and the hopup seems TM compatible, thus yes, it is a rebrand of the newer Cyma AK.
I also recommend it. For us Canadians, it's well worth the price. Whevenever considering a "TM compatible" project, I always think Kraken to start from.
And FYI the rear sight block is plastic, as well as the lower handguard retainers, both rear and front, just like TM. The buttplate is also plastic, as well as the muzzle nut, while the TM ones are metal.
Here's mine (work in progress)