Quote Originally Posted by 2manymustangs View Post
You may want to find out if it is chambered in .223, .223 wylde OR 5.56x45... IF it is .223 wylde thats very cool as you can switch between 5.56 and .223 ammo, they are not the same...
All of my AR's can shoot .556 or .223. But I mainly stick with .556. It's a little hotter than most .223.