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 RMS2 series is specialized for use on carry pistols and sports a reduced overall size and greater durability with the removal of the battery tray in favor of a reinforced housing. The optic is compatible with SHIELD Sight's popular RMS/SMS footprint and retains the IP67 waterproof rating, auto-adjust brightness technology and 20,000-hour runtime of the original SMS. This model comes in a glass lens configuration and features an all-black finish and a 4 MOA dot. One CR2032 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), 4 nylon washers and a battery cover. A plastic optic cover is also included for additional protection during storage and transportation.