Cant locate rings fo rit..Mine is not drilled n tapped but I saw rings that the frt went around the barrel and the rear mounts in the back open sight base. Any help?

I think these are what your looking for. Scope mounts

burris makes a mount like that. i have one on my 22/45 5 1/2" bull barrel ruger. clamps barrel in front and uses rear sight to mount in rear. so , burris it is.

Ridgerunner,

I have a couple of B-Square mono mounts that will mount on the reciever either in front of or behind the ejection port. They are similar to the SO Low mounts except that you only need one. If you want it I will take $25.00 for it. I have two of them and I only need one.

I put a Power Custom base on my MarkII. It had to be drilled and tapped, but it turned out really nice. I believe I payed around $70 for parts and labor.