Not for holosun k footprint - TANDEMKROSS Ruger Mark Series Shadow Mount V3.0

This plate lacks the anchoring posts for the Holosun K footprint, which is why I ordered it and what this review is exclusively focused on. Their customer service department stated that the two screws that attach the sight would be enough if they are installed following a procedure that dictates that each screw is tightened a little bit at a time and loctite is used. While this is good advice when tightening any red dot sight or scope (to insure even tightness), this by itself will not insure return to zero if the sight ever needs to be removed for any reason. Without the two anchor points, this plate should not be fully trusted with the HS 507K or any other red dot with a similar footprint. It is being returned and replaced.
Also, when something claims to be good at everything, it is generally mediocre - at best - for everything. I should have known better...