Sig Sauer Romeo-RS Compact 1x Red Dot - Circle Dot - The ROMEO-RS (Reinforced Steel) was specifically engineered to provide the accuracy and convenience of a pistol-mounted red dot at a cost that competes with high-end iron sights. Inspired by the design of modern striker-fired pistols that employ high-strength polymer and metal, the ROMEO-RS housing forms around a rugged steel chassis that supports and protects a premium aspherical glass lens. Threaded metal inserts allow for optimal torque load when mounting the optic to a pistol slide and installing the side-load battery tray, while additional metal inserts provide increased accuracy and long term durability for the windage and elevation adjustment mechanisms. The ROMEO-RS features a convenient side-mounted illumination adjustment button embedded into the polymer housing to prevent accidental interference, and the side-load battery tray makes battery replacements easy to do while maintaining zero. SIG SAUER’s updated footprint design maintains true compatibility with industry-standard optics cuts while allowing for the additional lock-up strength provided by steel recoil pins to eliminate the potential for any lateral shift. Built in Tualatin, Oregon, the ROMEO-RS was engineered to deliver premium red dot functionality at a cost that’s within reach of any shooter. FEATURES: 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 Designed, developed, tested and assembled in the USA Fully Backed by SIG SAUER’s Infinite Guarantee ROMEO-RS COMPACT is suited for the optic ready P365 Family of pistols