This is a Tannerite Target known as the GRK, model GRK - B.
Tannerite brand targets were specifically designed to be safe and non-flammable" whether it's sitting on a shelf" being mixed or used. When shot" it produces a water vapor and a thunderous boom resembling an explosion. Tannerite brand targets are the shot indicator targets of choice for hunters" law enforcement" and U.S. armed services.
Features:
Rifle Target
1 Pound Target and 10 Pounds of Color Blaze powder