cool. It looks like it is detonating on impact, and on timer. Might want to reduce the size of the particles though. I scaled them up because they would be way up in the sky. Both the particle, and the radius of the burst need to be reduced.

Good job . . . weird weapon, but cool. Also, add the red smoke as attachments to the projectile, add the red light volume as a widget (unless they already are, just don't see in the vid, looks only like the red contrail was added)