The SMSc is built in a nylon glass filled polymer and an Si02 Quartz hard coating for extra resilience to the daily wear and tear of shooting. Fits RMSc footprints such as Glock 43X/48. Glass filled polymer construction frame, Coated glass lens. Co-witness with standard iron sights. Battery Life; 2-3 years-average use > 4 years.
Great condition with no marks or wear. Dot and lens are crisp. I tried red dot for CCW just doesn't work with my old eyes.