That's a YHM front and fold down rear and you can look right through the scope and line up on target. Then when you flip the rear down and use the red dot it is just a little above the front sight. Put the red dot on it and it's history. I still have to get everything lined out but I am heading that way. They both give you a straight line of site out to the target. Point of impact maybe off a little and I might have to adjust the red dot down or up. I don't really known yet.I like. Looks just like one i want to get someday. though, i have one question. Thats an EO tech sight, but how can it function with that front ironsight right in the sightline. Wouldnt it just give you a really good reddot sight of your front apiture?