Well, for me, I inherited all of mine from my grandfather when he passed away. I don't think me keeping cherished items of my grandfather's as mementos has any bearing on whether I'm a Christian or not. Besides, plenty of Christians hunt, enjoy shooting for sport and recreation, and utilize them to protect themselves from persons that would otherwise do harm to them. Roughly half of all gun deaths in this country are due to suicide by way of firearm, and the next largest chunk stems from gang violence. It isn't like devout Christians are running around gunning people down en masse.