B-Square no gunsmithing semi-auto pistol mounts integrate with the pistol's original components to assure optimum performance with every trigger pull, superior to any grip mounted system. Ruger MK I/MK II Universal- (slides on receiver) -------------------------- For non-drilled Ruger MK I & MK II's only. Standard Dovetail Base.
B-Square 42878- Mount Ruger MK I/MK II SS is no longer avail.
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