Shield RMS2 [Glass]This red dot uses the Shield RMSc footprint standard. The RMS2 is small enough to fit discreetly on any gun, tough enough to withstand the harshest recoil and light enough that you wont even feel its there. The RMS2 is machined from strong aerospace grade aluminum. It has super fast automatic brightness adjustment to adapt to your environment allowing you to concentrate on the target. By removing the battery drawer from the original RMS weve improved