The deaths in Paris were all innocents. Over half of the gun deaths in the US are suicides conflated into the gun death data with the vast majority of the rest being the criminal element killing each other. Removing these from the statistics and accounting for the much larger US population, one might find that the rates of gun deaths are much more similar. Also there are already more guns than people in the US and even if there ever were a shortage of guns they would make their way up from Mexico and points south which have a much higher rate of gun deaths. One might also keep in mind that even assault rifles are ubiquitous in the Middle East and the rates of gun murders are extremely low. The answer is clearly not more gun legislation in the US as the cities with the tightest gun laws are also the ones with the largest gun homicides.