The DoubleTap pistol is a purpose-built close quarters defense pistol that has two barrels which are actuated by a single trigger. The defense pistol is available in either 9mm or .45ACP and will fire the barrels sequentially with separate trigger pulls. Barrels are available ported or standard and they are interchangeable on a single frame, regardless of caliber. Several holsters are currently manufactured specifically for the DoubleTap and the pistol can fit many generic holsters, such as a traditional belly band. The best way to carry spare ammunition for reloading is in speed strips or inside the grip. The grip area is specifically designed to hold two rounds loaded on a two round speed strip.