Just wanted to pass on an unsettling experience today with the 507c on my G19 MOS and how it got resolved.
I met up with my son at a local outdoor range. When I looked through the optic, I noticed a lot of misregistration of the 32 MOA Circle. It was very fuzzy and wavy, like broken up around the edges. I shot it ok but it was less than ideal.
When I got home, it was the same. I cleaned the glass both sides and swapped it to circle, circle dot, and dot with no success. I was thinking geez I need to send this back to Holosun, when it occurred to me, maybe I should clean the emitter?
Sure enough, I wet a Q-tip with lens cleaner and found a layer of Schmutz on the surface. After I got it cleaned, normal operation of the reticle was restored and it was back to being a very crisp circle.
I don’t know why, but it’s never occurred to me to clean the emitter. Maybe I got some oil on it and it collected some gunshot residue? Just thought I would pass on in case someone encounters this condition.
PS the new BUIS shot to POA with BB124/HST147/GD124+p.