All I can say is they are a great Company making some fine optics. I started with a PST 1-4...then added a PST 6-24 FFP....then added a Razor HD 5-20...then added a Viper 6.5-20 that came on a rifle I bought....then added a Razor G2 4.5-27. Had a S&B PMII 5-25 and compared it to the...