First, let's look at the countries that are above the USA when it comes to deaths from firearms;

Honduras, Venezuela, Swaziland, Guatemala, Jamaica, El Salvador, Colombia, Brazil, Panama, South Africa, and Uruguay.

What do they all gave in common? Well, firstly none of them are in the developed world. To find the next first world country on the list you have to go to Switzerland, with 3.25 per 100,000 people compared to the US' 10.54 per 100,000 people. The situation is much the same when it comes to homicides. This is not a list you want your country to be on.

I can't be arsed to give this issue the time it deserves, but here's a fun fact;

In 2015 toddlers shot and killed more people in the US than terrorists.

Toddlers.