Reflex and red dot sights have been mounted various way on pistols for years. None were inexpensive. When Glock introduced the MOS (Miniature Optic System) idea, I instantly saw several advantages. By building a system into the gun no bulky add-on mounts or expensive slide cuts that voided the warranty and only fit one brand of optic. I wear bifocals and with a reflex sight, you focus on the target and the “red dot” is in focus too. I was hoping this would speed up my target acquisition significantly. Continue reading Glock 19 MOS another life adventure →