Note that the guns in Finland are almost entirely hunting weapons.
Most of them are bolt-action rifles, .30 caliber for hunting moose (and other big game, including wild boars, bears and deer) or .22 caliber for small game.
The rest are mostly shotguns for shooting hares, waterfowl and other gamebirds. There are some semi-automatic rifles and similar around, but they aren’t common.
And handguns are rare, and pretty much limited to serious shooting sports enthusiasts and gun collectors.