The Clear Ballistics FBI Block is perfect for terminal ballistics testing for all handguns and rifles where penetrations are less than 16 inches. The FBI Block meets FBI ballistics testing protocol, and completely simulates the testing performed by the FBI. This block is the same size that the FBI and other law enforcement agencies use for terminal ballistics testing, and is perfect for hunters, hobbyist, semi-professional, professional shooters, and all types of law enforcement agencies.The Clear Ballistics FBI Block is made from ballistic gelatin, (a modern day ballistic gelatin), which is 100% synthetic, non-toxic, and contains no organic materials. It has taken the place of conventional ballistic gelatin, (100% organic), and completely temperature unstable. The FBI Block is 100% clear as glass, odorless, reusable, and temperature stable - suitable for temperatures up to 240Adeg F, and mimics human tissue. Clear Ballistic gelatin is mold-able into any shape and does not mold or ...