Slight correction:
Gun ownership is high in Switzerland, at approximately 0.5 guns per person. About 30% of Swiss citizens own guns. Military issued firearms may be purchased from the government after service, and then the gun is converted to a non-assault weapon. Restrictions can be placed on both the firearm and its ammunition. Put simply, the idea that the Swiss are required to own firearms and the idea that all Swiss own firearms are myths.
Additionally there is a distinction between permitted ownership and permitted use. Neither are guaranteed by right until permitted. These permits are handled on a canton level.
Is that 0.5 guns per adult or per capita?