It definitely feels different. It really isn't bad though. I have one hunting Glock set up with an RMR. The scoped gun is definitely heavier on top. I found a couple of the loads I am shooting will hit the mount and some run smooth as silk. I have plenty of open sighted hunting Glocks so no issue taking this one with a scope. The good part is it shot 2.5" groups at 100 yards and I believe I can improve that.

"A quiet hit in the right place is better than a loud miss in the wrong place followed by 10 more shots on the run"

I was a handgun hunter, when handgun wasn't cool.....