No-gunsmithing required! B-Square Ruger rimfire pistol mounts integrate with the pistol's original components to assure optimum performance with every trigger-pull, superior to any grip-mounted system.
Features and Specifications:
Manufacturer Number: 42877
For non-drilled Ruger MK I and MK IIs only
Standard Weaver-style base
Ruger MK I/MK II Universal (slides on receiver)