Heizer Defense has intro’d its first new product, a derringer-like hammerless pocket pistol they call “the world’s smallest and lightest .45 ACP conceal carry pistol on the market today.” Heizer’s original business is aerospace parts which appears to have influenced its use of materials for the new gun. This ain’t no plastic fantastic – the DOUBLETAP is made of titanium. Depressing the thumb latch releases the tilt-forward over/under ported barrels and ejects spent cartridges, shotgun-style. The unique design also accommodates two more cartridges held in the grip for reloads. Just in case you plan on carrying it to infinity and beyond, Heizer wants no mistake made about their manufacturing location. It’s stamped right there on the side: ST. LOUIS MO, USA, EARTH. Our wrists ache just thinking about it, but watch this space for a review just as soon as we can get our grubby little hands on one.