I've never had a 16 but have had a 12 or two. Very good old shotguns, super smooth if it's a steel framed gun, they weren't called "the ball bearing shotgun" for nothing. I don't know if it is set up for 2 3/4" shells or not, if it's local I guess you could stick a 2 3/4" hull in it and see if it will eject.
GNG had a beautiful high grade 31 trap about a year ago, solid rib, high grade wood, and full coverage engraving. It wasn't going for nearly what a comparable M12 would. I wanted it but have no need of a trap gun.
