TacPen Harvests DNA, Hurts, is a Stealth WeaponAddyDugdale1/06/10 7:03am37EditPromoteGo to permalinkOuchy. Fresh from the company that brought you the Uzi comes the TacPen. Made of high-grade aircraft aluminum, it's got two attachments up top to stab your assailant while gathering his or her DNA. I've got DNA harvesters too. Fingernails.