IMBLITZVT
Ultimate Member
http://www.usarmcorp.com/parts/part-page/282
http://www.subguns.com/classifieds/...esults_format=long&db_id=5538&query=retrieval
I have been watching US Armament with these uppers for 3 years now. Finally they got Colt to make barrels and they are for sale. I just bought one. I think it will be a very rare upper in the coming years. Not cheap but neither are any of the Colt Monolithic uppers! Maybe 25% more than the standard Monolithic Colt upper... but 1000x more rare.
Anyway I think its worth getting if you are a serious Collector. Only 199 left!
http://www.defensereview.com/colt-i...-rifle-assault-riflesaw-hybrid-weapon-photos/