NcSTAR® Low profile Micro Dot base mount for the Ruger® MK2 pistol with factory predrilled receiver. The easiest method to adding a Micro Dot optic to your MK2 pistol. The Micro Dot base mounts in front of the ejection port and doesn't require the removal of the rear iron sight. Micro Dot optics allows for quick and easy target acquisition of your target.