The RMS is a successor to the original SMS series of battle and competition-proven reflex sights used by professionals across the globe and introduces a new all-aluminum housing as well as the choice between the tougher classic hard-dipped acrylic lens or the new glass lens for greater optical clarity. The RMSc is designed for use on smaller-framed, single-stack carry handguns like the Glock G43 and the M&P Shield series, incorporating a reduced overall profile and lower mount height so that users do not need change iron sights to suppressor-height in order to maintain co-witness. The optic also incorporates updated electronics with improved battery contacts while retaining many of the legacy features like the IP67 waterproof rating, auto-adjust brightness and 9000-hour runtime on a single CR1632 battery. This model comes in a glass lens configuration and features an all-black finish and a 8 MOA dot reticle. One CR1632 battery is included along with a mounting kit that consists of a shim, two sets of mounting screws (2x M4x8mm; 2x M4x10mm), two hex tools (1.5 & 2.5), four nylon washers and a battery cover. A plastic optic cover is also included for additional protection during storage and transportation.