A person has one hundred times the likelihood of being murdered using a gun in the USA (which has rights) than they do in the UK (which has restrictions).
So curiously, the right to self-defence appears to make it more likely you will be killed by someone else with a gun than where such a right does not exist.
This is because there is, in fact, no way to distinguish the right to self-defence from the ability to attack someone. A gun is a gun.
Interestingly, it is also far more likely that you will kill yourself with a gun than that someone else kills you with one.