I have my red dot mounted on my flat top in the notch right before the barrel starts, this allows me to use my 2x screw in magnifier while having the buis down. I just bought a 3x magnifier with swivel mount, it needs to be mounted behind the red dot obviously, will mounting my red dot on the rail further down the barrel screw with anything? I'm guessing not, might look a little goofy though. If anyone has pics of a red dot with a magnifier mounted behind it, I'd love to see a pic. Here is a picture of mine for reference.