Would a "Death with Dignity" ruling reduce gun deaths?

I just heard that over half of gun deaths in the US are suicides – and those numbers are counted in the statistics quoted for gun violence.
“Of the almost 31,000 firearm deaths in the United States during 2005, 55 percent were suicides, according to stats from the Centers for Disease Control and Prevention.”
That is a shockingly large number! For the sake of this question let’s say 30% of the deaths were related to depression and 25% were people who just had enough and were ready to end their suffering.
Could the sponsors of a comprehensive “Death with Dignity” law claim the law’s passage simultaneously reduced gun violence by 25%?
Are there reputable studies on this, preferably overseen by the likes of NIH or CDC (Not NRA, not Anti-Gun, not political groups, etc.)?
Do other countries that claim low gun deaths not include suicides?
If a country has no guns but has an annual suicide rate of 16,000 (population adjusted) should that be included in the data?
I don’t want this to become an argument for or against guns. I am just trying to understand the data.
Because without data all you have is an opinion.