On the receiver
With that serial number, you will have to call Colt.
No serial number given.
No way to answer without the serial number. You can call Colt and they will tell you if you provide the serial number.
You will have to call Colt to find out
No such sn in the AR-15 series
Impossible to answer without the serial number. Call Colt and they will tell you for free.
You need to call Colt
you will have to call Colt to find out.
You will have to call Colt with the serial number.
1971
About 1976
Impossible to answer without the serial number. Call Colt and they will tell you for free.