-Reservists and the home guard no longer store weapons or ammunition at home; that practice ended a few years ago as the AG3 (HK G3 made under licence in Norway) was the weapon of choice for reservists to kill their spouses, then themselves (what we call honor killings when committed by non-native Norwegians)
Additionally, it was no secret who was a member of the home guard, so there were numerous cases of homes being burglarised for the AG3 stored there; the weapon was then used for further crimes, like bank robberies.
Now, weapons are stored at the home guard's places of assembly in case of mobilization.
Also, while I agree that it is no problem obtaining a hunting rifle or a shotgun (passing the test isn't THAT hard), a handgun is more complicated:
a) You need to have a clean criminal record, and be more than 21 years of age. Also, the local police must approve - say, it is (theoretically, at least) possible to be turned down even with no record if the local police do not think you are suited to own a weapon - say, if you regularly binge drink, are known locally as a trouble-maker or whatever.
b) You must have completed a safety course at an approved gun club. Typically 3-4 nights, intended to learn you how to handle the gun safely, know and follow shooting range regulations &c.
c) You must be an active member of an approved gun club, and must have been so for at least six months prior to applying for a purchase permit. Active basically means turning up at club events and shooting with one of the club's weapons until you have your own.
d) Yout licence may be revoked if you no longer have a need to own a weapon - say, if you stop showing up at club nights and let your membership lapse. Also, any problems with the law? Better take a good, hard look at that licence, because it will be revoked as soon as they get around to it.
e) You normally only get a permit for one weapon, unless you can lay credible claim to being a collector (in which case even more training and vetting is mandatory).