As rugerguy and s4s4u state, Super Blackhawk Hunter and Bisley Hunter come with Ruger medium height rings for 1" scope tube. Last I knew, Ruger will swap new 1" rings for 30mm, if desired.
Ruger rings are available in Low, Medium, and High, stainless or blued. The rings are held via Ruger cross bolts with 10-32 fine thread. My preference is to secure threads with fingernail polish and a 10-32 inside lock washer under the front and read nut.
David Bradshaw