People go rent a gun to kill themselves since they don't own one and have bought into the thought that a GSW is instant death.
For every freedom we have, there is a cost. For every right we have, someone will abuse it.
If there were no guns at all, there would be no deaths by GSW. However, we all know that does not mean that there would not be murders. People who were trying to stop gun shows were able to show a slight statistical corelation between suicide by gun and recent gunshows.... Makes sense, you want a cheap gun with no paperwork you don't buy from a dealer. The anti-gun crowd tried to use this as a lever to cast off the "scurge" of gun shows... What they failed to mention was that while rates of suicide by GSW did drop.... Suicide RATE did not drop at all. Other methods of suicide just went up to cover the loss that the lack of a gunshow created.
Long story short, if people want to off themselves, they will. To the point of renting a gun at a range if that's all they can do/think of.
I am a skydiving instructor for fun. People come out to learn to skydive and off themselves. We try to catch it in the first jump course... I have banned one student from jumping due to comments they made... They just went somewhere else.
Point is that as long as we are allowed to rent guns... People will rent them to off themselves.. It is a risk.
Since most suicidal people will find a way. It is a risk that I am more than willing to pay.
I had a buddy kill himself. He drove his car into a telephone pole. When he was not dead, he pulled out his pistol and shot himself in the head.... The whole thing was seen by a cop, my buddy was also a cop.
For us to have the right to have firearms, we have to accept that people will abuse the right to do bad things.