To a collector of Colt oddities, it might be worth a small premium of 50-100 USD.
The US Army presently uses the M4 carbine, a shorter and much modified version of the Armalite AR15.
It is the Carbine (short rifle) version of the AR15. AR stands for Armalite Rifle. It is a semi auto rifle.
It depends.. if you have a carbine length barrel and will be using it on a rifle with a carbine length barrel, then yes. If you took it from a rifle with a rifle length barrel, and are putting it on a rifle with a carbine length barrel, then it won't function properly.
Don't think so: laws here say you can't have EVEN semi-auto rifles. Let along full-autos.
Some guns include: Revolvers, AK's, M16, Uzi and much more...The ar15 and the m16 did not come into use until the late 60's. The weapons used before were the m14 and the m1 and m1 carbine.
Double Star and CMMG's bargain bin rifles. Some DPMS rifles, as well.
Try AR15.com Try AR15.com
If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
1959
Yes
Colt has not offered a AR15 in 308
By it's serial number. Go to www.proofhouse.com and under 'long rifles' listing look for AR15 Sporter