That's right, 20 or maybe less were made, the Huntsman mk1 was the more common action, I have one Huntsman mk1 action and one with a 2000 action which only one or two had, the other action fitted was the LR90 and there were only a few of those.
It's an SR92 (short rifle 92), was not popular so only limited numbers made. The one in picture is missing the sliding cheek piece and silencer does not look original.