A friend gave me a rifle to look at which I believe is a Carbine Williams (M2) but do not know for sure. It is marked with serial numbers etc including what appears to be the date 1942. It looks similar to the WWII M1 but the stock appears like a standard rifle. The only name anywhere is on the rear site that says "Williams". Can anyone provide information on this rifle or tell me where I can obtain information. It is a very unique rifle.