Lets check your sense of reality and see where your biases lay. So if you would please answer the following:
By way of example, you get a call from your daughter that she just fought off a rapist who told her that he was going to kill her after (details not appropriate for this forum) and dump her body somewhere where no one would ever find her. She continued the description by telling you how she fought him off and that the reason she was able to escape was by the use of a weapon.
Which, of the many weapons that she might tell you she used to save her life, would you find unacceptable to have used?
Would you find it unacceptable knowing the weapon she choose to fight off the attack was registered?
Would you find it unacceptable knowing she had no license for it?
Would you find it unacceptable that she completed no government mandated training with it?
Would you find it unacceptable that the weapon she used had a rail on it?
Would you find it unacceptable that it was Military grade?
I think the truth is that you probably wouldn't care. And maybe, most important is that nobody really would care, except perhaps the murderous rapist.
Look forward to your response.
I was trained in the management of assaultive behavior. The basic rule was to survive. Thus, in the above scenario, all of the above are acceptable, when one's life is at risk.
And yet, the use of a gun to kill masses of people for "sport", or when the outcome of killing massive #'s of people - suicide by one's own hand, or cop - has no relationship to your scenario.
A violent attack, by a more powerful person requires techniques which may cause death or permanent injury to the attacker. A pen or pencil used to enter the brain via an eye, can blind, incapacitate or kill an attacker; a blunt instrument used with enough force to the throat or the temple can kill or incapacitate an attacker and one's teeth can be used to maim or cause enough pain to thwart the attacker so as to allow the victim to run, or to become the attacker, using a thumb to the eye is always effective.