Here's an airsoft bomb project that is being created by Trojan Airsoft in the UK. Once certified for use in airsoft games this one offers nabt ways how to disarm or detonate it for the game... "An airsoft bomb unit being custom built by Pyro (Steve) from Trojan Airsoft. With remote detonator, countdown timer, keypad, speaker and more. Bomb triggers remote detonator which sets off smoke bombs and flashbangs. Currently around 85-90% complete."