Holy crap, that is dirty! I will pull the pins and reinstall. Wish I was able to get to the range a little sooner and get it sorted before shipping it back to Glock.
I read awhile back about about issues with the earliest MOS models (with optic mounted) that were having issues cycling, locking open, etc possibly due to the added weight of the optic? I can't imagine that is at play here? My RMR weighs so little!