Ruger Mk. iii/iv Optics Mount Installation Instructions

Make sure all parts are included. Use the table below to take inventory. If the inventory does not include screws to attach your optic to the mount, please use the screws that came with your optic.

Make sure your pistol is unloaded and safe before continuing.

If you have an Aimpoint Micro mount, please see specific instructions here: Aimpoint Micro Mount

Install your optic onto the mount. Use the table below for torque values, make sure not to exceed those values! Then make sure the screws do not protrude below the bottom of the mount, as shown in the picture below.

Install your optic and mount onto your pistol using the included torx drive screws.Do not exceed 7 in-lbs!

Perform a function check and make sure the pistol is safe to fire.

Optics footprintInventoryOptic Screw Torque Value
Aimpoint AcroOptics mount
2x mount mounting screws (6-48 flat head, torx drive screws)
See optic manufacturers instructions
Aimpoint Micro
See additional instructions here
Optics mount
2x mount mounting screws (6-48 flat head, torx drive screws)
4x M3 mount mounting screws
Included M3 screws:
5 in-lbs
DocterOptics mount
2x 6-32 mounting screws
2x mount mounting screws (6-48 flat head, torx drive screws)
Included 6-32 screws:
6.5 in-lbs
ShieldOptics mount
2x M3 mounting screws
2x mount mounting screws (6-48 flat head, torx drive screws)
Included M3 screws:
4.5 in-lbs
RMROptics mount
2x mount mounting screws (6-48 flat head, torx drive screws)
6-32 screws that came with your optic:
6.5 in-lbs
Deltapoint ProOptics mount
2x mount mounting screws (6-48 flat head, torx drive screws)
M4 screws that came with your optic:
6 in-lbs