Swiss K31 7.5x55 Swiss 25.7" Bolt Action Rifle

The Swiss Karabiner Model 1931 (commonly known as the K31) chambered in 7.555mm Swiss with a 25.7" barrel is celebrated by military surplus enthusiasts as one of the most mechanically precise, match-grade service rifles ever issued. Though often attributed generically to SIG, the vast majority were manufactured by Eidgenössische Waffenfabrik Bern (W+F Bern) under strict Swiss government contracts.