Oh, okay, thanks for clarifying. The earliest firearms were so expensive that the only people who could afford them were professional (in the sense of working for money) soldiers (mercenaries really, this was before the concept of state owned standing armies) I suppose they claimed them as a tax deduction......

Yes, their purpose was to kill people, they were first and foremost military weapons. But there weren't many around and I would think that they would have been built by hand primarily which would have kept numbers down. So gun control wasn't really an issue.
Arquebus and muskets and the rest of the firearms of the 16th and 17th centuries weren't all that efficient and effective either. I mean the early arquebus couldn't even punch a ball through decent plate armour.
With the improvement in technology and the ability to produce firearms in huge numbers their costs were reduced and they became available to the average person, that is, the non-military person. Legislatures around the world had to deal with the fact that firearms were readily available and had to decide if and how to regulate their possession and use. If a legislature decided that gun control was warranted they then had to decide on classification of firearms. Now I can't give you examples from every legislature on the planet so I'll just have to try and take an intuitive approach to this.
A single shot firearm is less effective than a bolt-action repeater which is less effective than a fully automatic firearm. If we can agree on that then everything else should follow.
By "effective" I mean in ability to discharge its purpose.
A single shot rifle can be used to kill an animal, bird or human. But using a single shot rifle to kill several birds, several animals or several humans would be problematic.
Should single shot rifles be banned because they can be used to kill humans? No, on balance because of the limited ability of the single shot rifle to kill humans in numbers of more than one I don't see the need.
A bolt action repeater rifle can be used to kill an animal, bird or human. Because of its action it's much more effective and efficient than a single shot firearm. In the hands of someone competent it's entirely possible to kill several animals, several birds or several humans.
Should bolt action repeater rifles be banned because they can be used to kill humans? Again, on balance, I donÂ’t think so. The bolt action needs to be worked to reload and provided there isnÂ’t some sort of extended magazine with a ridiculous amount of bullets in it then the magazine has to be replaced every five or seven shots or whatever the regular capacity is (IÂ’ve never owned a rifle, only a shotgun and a revolver). So for those reasons I thin a ban isnÂ’t required.
A machine gun can be used to kill many animals, birds or humans. In the hands of someone competent it can kill a great number of animals, birds and humans very efficiently. Because it can be used to kill a high number of humans very efficiently it should be restricted to ownership by the military and some units in civilian police forces.