Handgun-mounted red dot sights have been around for a long time. I was first exposed to them in the late ’90s mounted on USPSA Open guns. These flat-shooting, compensated, red dot-adorned pistols ran fast when they were running, and Open shooters were most often at the top of the list at the end of the match. While this might seem like an odd addition to your EDC system, it does have its place. Image: Shutterstock/AlexLMX And an interesting thing began to happen. The speed and precision of the dot-mounted guns got the attention of defensive shooters. Bit by bit, over the…