If the muzzle is 1/4" on an M2 ball, it is about a 1 or less. I say YES, as the Israelis took very good care of there weapons. Mine about the same metal finish and slightly better stock, and I gave about that much for mine. It was a great shooter. From what I could find out, Century just cleaned them up without messing with them. As for the Isrealis, they used USGI mags and replacement parts.