Swiss K31 straight-pull rifle, 7.5x55 caliber. Long known as probably the most desirable of the Swiss straight pulls. This is an exceptional lot and all will qualify as NRA surplus Good to Very Good, with most being on the very Good side by surplus standards. The rifles sold under this SKU came to us from Switzerland with the original highly desireable Swiss Diopter Sights installed. This makes a highly accurate rifle even more accurate through use of the precision sights. See More Below.