From their announcement:
We are pleased to announce that Topgun Marketing LLC has released a new range of sleek and power 15mm Grav Armored vehicles for sale.
The Type 9 – 16 Grav Tanks, and Tank Hunters are currently available for sale, in both the clean-hulled, and the AADS variants. The latter are the models shown of the website, with circular Active Armor on them. See our website for more details about this powerful vehicle protection system, and for more photos and info on these 15mm vehicles.
We should have the others available for sale shortly.