Explosion in the Distance Might Be a Rifle Target

If you have heard an unexplained “explosion” lately, the culprit might belong to a binary compound explosive, commonly used in rifle target practice.  According to the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), “Binary explosives are pre-packaged products consisting of two separate components, usually an oxidizer like ammonium nitrate and a fuel such as aluminum or another metal. These components typically are not listed separately on the List of Explosive Materials and do not meet the definition of “Explosives” in 27 CFR 555.11. Therefore, ATF does not regulate the sale and distribution of these component chemicals, even when sold together in binary “kits.” However, when the binary components are combined, the resulting mixture is an explosive material subject to the regulatory requirements found in 27 CFR, Part 555.”

Tannerite, a common brand name binary explosive, contains the combination of ammonium nitrate (an oxidizer) and aluminum powder (a fuel).  Although the noise might be ear shattering, there is nothing illegal about the use of binary explosives for rifle target practice.  The Bureau of Alcohol, Tobacco, Firearms and Explosives explained that “Mixing binary components together constitutes manufacturing explosives. Persons manufacturing explosives for their own personal, non-business use only (e.g., personal target practice) are not required to have a Federal explosives license or permit.”

Exploding rifle targets, such as Tannerite, can be purchased online or at local gun stores.  However, exploding rifle targets can cause problems when not used as directed.  The larger the amount of Tannerite used to make an exploding rifle target, the louder the noise will be.  Exceeding the recommended target size could result in injury, death or noise complaints.  According to an Intelligence Bulletin by the Federal Bureau of Investigation (FBI), “The FBI assesses with medium confidence the increasing popularity of ET’s and the availability of information online has led to extensive experimentation, which could provide criminals and extremists with ideas for future illegal acts.”  The FBI also stated that no more one-half pound is recommended for legitimate use. However, some individuals have posted videos online displaying explosions containing up to 100 pounds.