I actually want a new AR, dont really need one, but anyway......give me some advice on another upper and/or complete gun for a new shooting experience.  

Already have an 11, 14, and 20 inch upper for my .223 and a Triple X suppressor good for any of those.  Have two 9mm uppers that are cool and fun to shoot.  Had a .22 years ago, but sold it due to not being reliable enough for my likes......

what else is there besides .308 ?

[url=www.ferret50.com].50 BMG![/url] [:D]

.458 SOCOM
.50 Beowulf
9mm
.45 ACP
.243 Winchester
...

Bushmaster [bounce]

A dozen to choose from; [url=ar15.com/forums/topic.html?b=3&f=12&t=154649]Tromix AR calibers[/url]