TheWarne Maxima PA Ruger No. 1 30mm Rifle Scope Mounting Rings have been designed to fill the need of mounting scopes to rifles with an integrated mounting rail. Each ring model of these from Warne is machined to exacting tolerances for proper fit and function.
Rings make a great, solid lockup on Ruger # 1 Single shot. They're a bit heavier than anticipated and a little fussy to install, but rock solid with no trouble keeping crosshairs level while doing the final tighten down as with horzontal rings.