I recently switched to a flat top upper in preparation for some goodies to come next year. With my current setup, my front sight gets in the way of my red dot. Next year, the red dot is going away, but I still have the issue of the front sight. Can I simply remove it without having to get new everything? It looks to me like the front sight assembly is what the rails are attached to. I was told that typically the sights are slid over the barrel, then the flash hider/muzzle break are attached. Any truth to that? I simply want to remove my front sight, and replace it with a flip up sight, what's the easiest way to go about this? I'm pretty much a noob when it comes to this kind of stuff, but I am eager to learn. Thanks!