I'm looking to add a few ARs to my collection but I don't want to buy just anything. Looking for older model AR15s. Factory Configuration. Being a traditional AK collector I don't know as much about the older AR15s. I'd prefer a 20" barrel colt A1 or A2 clone. And Possibly a Bushmaster XM carbine length. Used to own one back in the day. Located Central Indiana. Anderson/Muncie and surrounding areas.