I've long learned to shoot battle rifles the way they are made and can be reasonably efficient without modifications. I think it would suck to have to modify every single rifle to be good with it. I wonder if people have to modify computer keyboards, pianos, guitars, door knobs, hammers, shovels, coffee cups, and hockey sticks in order to use them efficiently?
I have yet to see one person out at the range that can shoot better with all these mods. Of course we are here on the internet where everyone is a combat vet with a metal of valor for their shooting skills... yet on the range, all them mods are a waste of money and people still can't shoot.