it's hard to get a combo low enough, this one works, and matches eye alignment to a 1" scope in low rings for natural quick shooting
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this is a howa grendel but I have couple savage rimfire set up on their factory single slot front base as well and works good, batteries optional, it's proper quality and would match your new ruger perfectly, I have ruger American ranch grendels also so pretty much same set up, I pull the rails off my rugers and use talley 1" low rings with trijicon scopes on those but could easily yank that factory rail or use it with this set up and alignment will be there, for cleaner top of action I would pull the factory rail and just use a basic 3 slot low profile front weaver type base like I did on the howa in that picture, then you hand has smoother interface with carrying and handling on the top of the action with the holosun on a 3 slot rail, my rimfire on on the factory single slot weaver bases up front and I just removed the rear base and put screw hole filler screw in the back empty holes, did same with howa in picture, clean, no fat