Clem...your opinion is exactly that, yours. Lets not get into a pissing contest here over who has more posts on this form. That's about as relevant to the topic of the original post as his hair color. Given the current situation of the firearms market, "tier" really doesn't matter does it? Come to think of it...that term was coined by a certain "visored" member who has since been banned from M4C.
LoneOak has hands-on experience with the product in question. Do you?
Where are the extensive specs on Colt's website? Here...let me help you:
http://www.coltsmfg.com/Catalog/Colt...CarbinesI.aspx