300-2000 USD
Colt has not offered a AR15 in 308
$800-$2,000.
$1599
As of today (10/18/08) $900 ~ $1,370 depending on condition.
The US Army presently uses the M4 carbine, a shorter and much modified version of the Armalite AR15.
250-2500 USD depending on the EXACT model.
Try AR15.com Try AR15.com
To a collector of Colt oddities, it might be worth a small premium of 50-100 USD.
Both are assembly line weapons. Stag in my opinion also has a better reputation. Unless you decide to go tactical, they are all pretty much the same. Bushmaster, dpms, stag ext..
If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
1959
Yes