Aimtech bases are manufactured from the finest quality heat-treated aluminum alloy extrusion, machined on American-made CNC machining centers. No gunsmithing required, and iron sights remain usable. Uses Weaver-style rings (not included).Ruger Mark I & Mark II
Will not fit early model Mark 1
This is a full sized Weaver rail.
This mount replaces the right grip and screws on to the frame.
Weighs 4 ounces.
Mounting hardware included.