The casing on these projectiles is made of reactive materials that release a large amount of energy when subjected to a sudden shock or impact—such as striking a target. In other words, they explode or superheat when they hit. Similar Gear Accushot Ammo Armor-Piercing Ammo Biter Ammo Bug Ammo Capsule Ammo Flayer Ammo Flux Ammo Hollow-Point Ammo Homing Ammo Jammer Ammo Laser-Guided Ammo Plastic Ammo Proximity Ammo Reactive Armor-Piercing Ammo Regular Ammo Splash Ammo Zap Ammo Zero Ammo