Hey, it’s called the Double Tap. So why wouldn’t we offer you another look at the derringer of the day? OK, the Heizer Double Tap’s about as far removed from ye olde two-shot micro-pistol as Rosie O’Donnell is from Natalia Vodianova. But the concept is the same: deep concealment. According to our man Dan, Heizer’s not going to have any trouble scaring-up orders for their diminutive semi. Securing one, or raising the cash for same, could be something of an issue. Good luck with that. Review to follow . . .