Re: Users of scoped CETME opinions needed
The B-square HK/clone mounts are not great by any means. They tend to work lose no matter how they are attached/tightened down and as widnerkj said, they give you an impossibly high mount unless you are running an MSG/PSG/PRS stock with an adjustable comb or you install a cheek riser of some sorts. But even then, they are not ideal. The MFI mount (see above) or the original B&T mount is a much better option!
Also, when scoping your rifle, you'll need to be cautious of the scope you plan to mount because a long scope (and/or one with a large bell) can interfere with proper operation of the cocking handle. Try to keep the scope length to 13" or less (you may be able to go a little longer depending on how far to the rear you can mount the scope and keep proper eye relief).