Weaver Base Pair Ruger 10/22 Matte, Blister

I recently bought a Rossi RS22m (22 magnum) semi-auto. I had never owned a Rossi before. I like this rifle but the picatinny rail was way too high. Both sets of holes on the Rossi receiver are wide spaced like the front holes on a 10-22. I just ordered 2 sets of these mounts and Installed on the Rossi and it worked perfect. Now the scope is down close to the receiver as it should be. 5 star

Works like a charm.