You will have to call COLT
You will have to call Colt to find out.
Colt data at Proofhouse.com
You will have to call Colt with the sn to find out.
You will have to call Colt to find out
AR-15 is a trademark owned by Colt - thus, no other manufacturer may market their rifles as AR-15 unless they are specifically licenced from Colt to do such. LAR-15 is simply Rock River's alternative name to "AR-15" in order to avoid infringing on Colt's trademark.
Proofhouse.com has Colt sn tables. You can also call Colt and they will tell you.
Colt has not offered a AR15 in 308
$1384.99
You will have to call Colt
you will have to call Colt to find out.
You need to call Colt