This ammo is manufactured by Northern Arizona Munitions (N.A.M.), which is a fully licensed and insured ammuntion manufacturer. They have been manufacturing incendiary grade ammunition for 22 years. They manufacture the projectiles for this ammo from the ground up using custom made bullet jackets that are thin at the tip and thick at the base, so they will rip open easier upon impact with the target. The manufacturer has a limited amount of bullet jackets to make this ammo. This ammo has a chemical mixture that is very similar to the 50 cal. Raufoss and also has the sea green tip color. It contains Barium, Titanium Sponge, and Zirconium Sponge under the bullet jacket at the tip of the bullet. The Zirconium Sponge and bullet jacket is what seperates this ammo from a regular Incendiary round. This ammo is designed to be shot into a hard target that will rip the bullet jacket open to expose the chemical mixture. Metal, concrete, and rocks will rip the jacket open the best to give you the optimum performance of this ammo. This ammo will give you twice the flash bang as regular Incendiary ammo. This ammo will burn at 5000 degrees at point of impact. Use EXTREME CAUTION, this ammo is highly flammable upon impact. This ammo is completely safe to shoot through your weapon.