Abstract: A grenade simulation apparatus is provided that allows users to simulate the detonation of a standard grenade, flashbang grenade, and impact grenade, without using explosive charges, fire, or pressurized material. The apparatus may provide both visual and auditory feedback in a safe and re-usable manner. The apparatus may provide a method for triggering a simulated detonation externally using a switch. A simulated detonation may include visual and/or auditory feedback, such as through the use of a siren and LEDs.