1950 93L1516 C Mk 3 sight, rifle and barrel appears blued
1950 92L7719 C Mk 3 sight, rifle and barrel appears blued.

To be honest, I really can't tell. I've looked at them several times, next to my 1944 and 1945 examples, and sometimes I think they are parkerized, because the finish is VERY slightly rougher, and then next time, I'm certain they're blued. They are not green. Barrels seem to be the same as the receivers.

Ed