I think that says MDT on the mount/rings, but it doesn’t look like their standard mount on their website. I think MDT is also coming out with a new version of the ACC chassis, but I don’t know if this is the new or old one.
The mount looks like it has an ERTAC type knob at the rear, maybe for adjustable cant?
I see weights on the chassis forend, but that thing on the right hand side between the weight and action?