Eh, where did you here that? Fact is, there is ZERO correlation between firearm ownership and homicide rate:
http://www.gunpolicy.org/firearms/compare/194/rate_of_homicide_any_method/10,26,40,49,57,280,65,66,69,71,81,86,88,91,125,136,148,149,153,281,172,177,178,192,190...