Tannerite, a binary explosive target, is comprised of ammonium nitrate and aluminum powder. These two components are non-explosive when stored separately. Mixing them creates a compound that detonates upon impact from a high-velocity projectile, such as a rifle bullet. This detonation produces a loud report and a puff of smoke, offering immediate feedback to the shooter regarding their accuracy.
The legality of this binary explosive hinges primarily on its classification as a non-explosive until the point of mixing. Since the individual components are not themselves regulated explosives, they can generally be purchased and possessed without requiring federal licenses or permits. This status stems from the fact that the mixture is created on-site, immediately before use, and is not intended for long-term storage in its combined form. Furthermore, its primary intended use is for recreational shooting activities, not for use as a demolition agent or weapon.
