Sig Sauer Romeo-RS Pro - Red 3 MOA DotThe 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. Metal inserts allow for optimal torque load when mounting