This is a custom, aluminum, precision machined, one piece adapter plate to mount a Trijicon RMR

red dot sight to the Ruger Mark IV Competition, Target or Hunter by way of the factory dovetail on the barrel.

No machining required. Includes two stainless steel set screws.

Red dot sight mounting threads are 6-32

This adapter plate provides the lowest mounting height possible and also allows

the use of standard holsters with a small modification.

Ruger Customer Service has also assured me that the dovetail cutouts are the same

for the Mark I, II, III and IV series. I have not tried this adapter out on the Mark I, II or III

so No Guarantee on the fit for the Mark I, II, and III. Just take Ruger's word.

Actual pictures of mount - With 30 day Warranty

Price $89.50 each