Quote Originally Posted by Blackrider View Post
Try the Sportsmatch mount with the extended rear, it suits Airsporters and Mercurys especially. I think it's the OP12C but not certain ?
I use one of these with a period Japanese 4x32 Tasco on my RB2 .22 Stutzen and I like it !
Similar set up on my Mk5, with the Sportsmatch mount and a period Bushnell 6x32.

Knibbs appears to sell the rear sight (which I think is a Williams of some kind). Or you could use a Williams receiver sight.

Isn't the front sight the standard Airsporter/Scorpion/Mercury/etc one? That shouldn't be hard to track down.