I glommed several Swiss rifles at auction a few days ago One of the items was a nice looking K31 in a walnut stock.
Several of the K31's, including the one I nabbed, had stickers on the handguard which I've not seen before. I've since learned that they are competition stickers, signifying that this rifle was inspected and approved for match use.
https://www.milsurps.com/images/impo...12/K31B1-1.jpg
https://www.milsurps.com/images/impo...12/K31A1-1.jpg
https://www.milsurps.com/images/impo.../12/K311-1.jpg
https://www.milsurps.com/images/impo.../12/K31C-1.jpg