Would have to be a "D". M1C's are all in a well documented serial range, and its in the mid-3-million range. For a D sniper to be legit , it would also have to have a drawing number on the barrel that included "555". What I mean is, under the rear handguard, the barrel has the original drawing/assembly ID number stamped into it. As I recall, its a long number, like 8 or 9 digits long, but inside that number are three 5's. Example: 243555721
If the barrel hasn't got these numbers, its a put-together. Check it out & let us know, please. This DIRECTLY affects value.
