I've read all the FAQ's but I have a more specific question about capacity. Is handgun magazine capacity regulated by the fed govt'? State? Most handguns I see have magazine capacity of 10 rounds. Obviously if I can't put an assailant down by the time I've emptied 10 rounds, I'm probably doing something wrong, but let's say it's a zombie attack and I want a gun with a 15+1 or greater capacity. Legal? Options?