250-2500 USD depending on the EXACT model.
Colt has not offered a AR15 in 308
Try AR15.com Try AR15.com
Law Enforcement
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
Yes. The Colt AR15 is the original semi-auto version of the military M16. The rifle is now made by many manufacturers besides Colt.
50-1200 usd
$800.00
Variant of the AR-15 manufactured by Colt. It had a 'slab side' lower and no forward assist.
If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
To a collector of Colt oddities, it might be worth a small premium of 50-100 USD.
You will have to call Colt and tell them the serial number.
100-1000 USD or so depending on specifics.