The RMSc version of the extremely popular RMS is a slimmed down version of the RMS designed to fit on single stack pistols such conceal carry handguns such as the Glock43, Smith & Wesson shield and the 1911. The RMSc 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 Features:Slimmed down version of the RMS designMachined from aerospace grade aluminumFast automatic brightness adjustment2-3 Year battery lifeBottom Load Battery