I am looking for more info on the Vietnam era Redfield scopes that were used on the M40's. I still don't have one and I am looking for a clone for a build. This is proving to be the hardest thing to find for the build, except the original M40 Redfield Jr. base and rings. May just have to go with a 3-9 without the accurange reticle. I wish ironsight ot the other Redfield repair facilities would offer the accurange as a replacement reticle. I have heardthe original "Marine service" scopes bring upwards of $3000.