They've always touted the basic military AR as the ideal starting gun, easy to use, low recoil, cant screw it up, and iron sights to get you going.
Now the manuals always expect people to know how to set the sights up, and to know how to get the proper sight picture without ever using iron sights before, and very little in the manual...
SO why do they want us to get the basic rifle, with basic irons circa Vietnam, and then NEVER want us to get a rifle with iron sights on it again?