We don't have anything definite for an explosion prop at this time, but it may eventually happen. There are plans to have such an effect prop at a later time, but that will be at an unknown point in the future. For the time being, you can use the muzzle flash props to create an explosion by resizing them and placing them accordingly to simulate an explosion prop.

We'll have something eventually, just not at this time. Constantly asking won't make it happen any faster, so please try to be patient.