Ar15 (223) can be had in a single shot rifle. My buddy's kid hunts with one. Same with an ar10 (308) , very common hunting rifle for both youth and adults. What makes them "specifically" for the military? Because of the picatinny rails? The capability to mount attachments to the weapon? Or is it the looks of the gun? I will agree that it's an intimidating looking weapon. And also keep in mind that I don't agree with someone carrying one across there chest through town just because it's there "right". Some things are just dumb, and abusive to a situation. But there are lots of common, practical uses for them. Keep in mind that I don't own one, or care to for that matter. But I know guys that use them for coyote control, and crop damage control for night hunting feral hogs. The fun to shoot part is just a bonus, but in my opinion it's still plenty of reason for a gun guy to own one if he so chooses, and can legally do so. Here's a little food for thought.....I would bet my Boots that a 12 gauge shotgun loaded up with 00 buck would do more damage in a nut cases hand than a scary looking 223 rifle. If your not familiar with coyote hunting or hog hunting, there is more times than not, a very necessary need for quick follow-up shots. With a bolt action rifle it takes to long to be on target and ready for another shot, especially when the animals are scattering. As far as protecting ones belongings....... If my wife woke me up in the middle of the night and said honey a vehicle just pulled in and 2 masked men got out with guns in there hands. In the closet is a single shot 22 , and an ar15.......guess which one I'm about to "protect my belongings" with..... again I don't own that style rifle. But if I did that would be the scenario