Sig Sauer ROMEO-RS Compact 1x Red Dot - 6 MOA Dot - The ROMEORS integrates a highstrength steel chassis within a strikerstyle polymer housing to protect an aspherical glass optic while minimizing weight. Threaded metal inserts provide proper torque points for slide mounting and batterytray installation; additional metal inserts support precise, longlasting windage and elevation adjustments. The recessed side illumination button eliminates accidental input; the sideload battery tray enables ongun battery swaps while maintaining zero. SIG SAUER's revised footprint preserves compatibility with standard optic cuts and adds lockup strength via steel recoil pins to prevent lateral movement. Manufactured in Tualatin, Oregon, the ROMEORS delivers durable, repeatable reddot performance at a value price. Designed, developed, tested and assembled in the USA ; 8 Illumination Settings; Hybrid design featuring a skeletonized steel chassis, molded into a high-strength polymer housing; Premium molded glass ashperic lens for a distortion-free sight picture; High efficiency point source LED emitter with 8 individual brightness settings; Large side control button for easy reticle adjustments; Convenient side-mounted CR1632 battery tray with security screw for easy access without removing the optic from the firearm; Minimum continuous runtime of 20,000 hours (at medium setting, dot-only); MOTAC (Motion Activated Illumination) that powers up when motion is detected, powering down when inactive;