Snowhunter11
Lil-Rokslider
A few times it has moved .1-.2 mil on me. However it would not affect a close range shot. And anything I need to dial I easily correct it. Not a big deal to most.. in saying that since @Bluumoon was so gracias to help me acquire a few orings I did change it. Marginal upgrade but may be worth it in the long run. Took me less than a minute.