Cool, thanks for the info. Yea I’ve had poor luck with 3 different Romeos so I’m done with them as well. I know the window is a little larger and clearer on the Romeo than the 507c but what good is that if the damn things don’t work! I think the less expensive Holosun you mentioned is the 407c. That is supposed to be the same optic as the 507c but with only the dot reticle for $70 cheaper. My 507c comes in tomorrow so I look forward to giving it a go.