22/45 Picatinny Rail Glock Compatible

Ruger due all ultra light back up sight compatible with most of the ruger mark series and 22/45 has clearance for factory open sights when reversed and standard pattern with extension, when put the other way has extended eye relief rail ultra light at only .00 ounces has Glock dove tail mached in rear and ica dove tail front sight mounting. Manufactured and machined in payette idaho usa milsopec 1919 to be compatible with the widest range of rings possible while maintaining a better alignment. numbered slots to help in relocating optics after servicing extended eye relief over the boar axis to help with different scopes