And as I asked earlier but did not get an answer .. why do people need automatic rifles? Why do you need 600 shots per minute to protect yourself? What is happening in the states? Zombie-Cyborg-Dinosaurs?
A huge part of the problem with trying to explain this is the lies from politicians, media, Hollywood, and education systems in regards to this issue so first many people have to unlearn what they think they know in order to begin to understand the truth, and this is not an easy thing to accomplish.
First off, automatic weapons were never designed or intended as 'murder machines', their design, development, and intention is for what is called 'suppressive fire'. Automatic weapons by their very nature are highly inaccurate and have a very low kill rate per round fired (example: the Las Vegas shooter fired around 200 rounds just into the hallway when hotel security was outside his room, but only managed to wound the hotel security guard.) Suppressive fire is primarily for fear, to keep opposition too scared to move, much less return fire, it is defensive by its very nature. However, in a civilian environment this means your looking at an extreme risk of collateral damage, which is why most automatic weapons are classified as Ordinance instead of as Arms.
The first true automatic rifles were technically Battle Rifles, which means they used mid sized rounds such as .308 and .30-06. These are .30 caliber or 7.62 9mm rounds, making them comparably heavy, limiting how many can be carried, which negates the point of using them in automatic fire, not to mention the recoil and muzzle flip made them even less effective.
In stepped Hitler with the StG-44 using a low power round (33mm long by 7.92mm across, giving it slightly more mass than a 9mm handgun round.) This was the first Assault Rifle, the concept being that by using small light and low power rounds then even the least effective soldiers on the battlefield can still be useful by providing suppressive fire while effective soldiers do the actual killing with their semi-automatic Battle Rifles.
A moderately trained person can take hundreds of rounds with an automatic rifle to kill one person, whereas that same person with a Battle Rifle can kill someone consistently with one to two rounds fired.
Now the funny thing about the numbers of people killed or wounded by firearms is that the majority isn't even done with a rifle at all, but with cheap, typically stolen, handguns in cities where firearms are the most heavily regulated.
The flip side of that is that the rate of crimes reported as stopped or prevented by the legal use is firearms is three times greater than the rate of firearms being used to commit crimes.
https://www.gunowners.org/sk0802htm.htm
Now, I am not claiming that Ordnance should be readily available to all citizens, but I also don't see any issue with a wealthy citizen that is willing to pay the price tag and undergo the level of continuous scrutiny involved in legally owning Ordnance being allowed to do so. Most governments seem to feel this way as well, though the last time I checked the laws for this in European countries you had to be both wealthy and politically connected.