The Heizer DoubleTap Pistol ($450) is the world’s smallest and lightest .45 ACP concealed carry pistol. It features an aluminum frame in an ultra-compact, no-snag hammerless design. It can hold up to two rounds in the chamber and has an integral grip that can house an additional two rounds. While an ambidextrous thumb latch ejects your spent rounds. The DoubleTap is 100% American made and would make a great concealed carry weapon.