RayFire - This Script helps you to create shoot effect. RayFire can push object using reactor, create holes on impact points in object in realtime. Also it can create smoke, debris, lights, decals, bullets or custom object predefined by you. RayFire can work with multiple animated objects and It can works with skinned or pointcached objects. Also You can create all chosen effects or any other objects(lights, particle system, geometry object) defining by hand all impact points on target object.
RayXplosion - Helps You to create explosion using reactor.
More info here - http://forums.cgsociety.org/showthread.php?p=4401362#post4401362