Is that coal in your stocking, or a grenade? The Scottsdale Gun Club in Arizona is offering a special way for families to put forth their holiday spirit. Gone are the days of hysterical children, trying to wriggle their way off the lap of a bearded stranger that smells like Marlboros and peppermint schnapps. Enter the greeting card that packs a real punch. Like that coming from the smoking barrel of an $80,000 Garwood Minigun!