Sao optilock rings - Sako Optilock Rings

These are pretty solid rings. The poly ring insert snugs up and protects the scope tube. They probably help with minor alignment of the scope. You must buy the bases separately. They are a bit of a pain to align rings with the bases. If I needed to mount a scope again, I would get a pic rail and rings instead. Can't complain about the solid lock up on the scope shooting a 300 Win Mag. I purchased 30mm Med rings. Handles a 50mm objective easily and would probably accommodate a 56mm objective.