My Wingmaster was made in 1976, it was my go to duck and goose gun back in the day. I switched to others when steel shot was required, saving it for upland game, but a few years ago I bought a second steel shot barrel for it and didn't realize how much I had missed it. What a smooth gun.
Is the receiver matted too, or just the barrel? If it is truly made in the 70s it is pre steel shot so no waterfowl unless you use the bismuth types loads.