Our Micro Reflex Sight utilizes an adaptive base for mounting on either long guns, shotguns, or certain optics ready handguns. A universal Picatinny low mount is included with the SCP-RDM20R to cover most applications, but when removed the bottom base of the Micro Reflex Sight is compatible with Glock MOS #1 and #5 plates, as well as, Smith and Wesson CORE™ plate #5. Precision machined from aircraft aluminum with a matte black finish, our micro reflex sight features a green 4 MOA singe dot, 6 brightness settings, and a 1-click memory feature to return the user to the last setting used upon reactivation. Windage and elevation adjustments feature a 1 MOA per click adjustment at 100 yards and the 23x18mm multi-coated lens provides a wide and comfortable field of view. For those who plan to run our micro reflex sight on an AR15, the SCP-RDM20GAC will have everything you need to get running and gunning out of the box and instead comes with an absolute co-witness Picatinny mount, as oppose to the universal Picatinny low mount.