Optilocks are good solid mounts but there is no excuse to have to put those heavy two piece mounts on a light weight rifle. Sako really needs to up their game and design some good light weight mounts.
In general the screws are all a bit soft on Optilocks. The design self tightens the base screw and can sometimes be very hard to loosen without stripping. A good tip for loosening them is to remove the scope first from the rings and then tap the base to the rear of the gun using a hammer and a thin block of wood. All it takes is a light tap and the base screws will then be easy to turn.
