Re: Attach an emitter to an object?
Make an AEmitter that emits this certain pre-defined MOPixel. Make sure EmissionsEnabled is set to "= 1" and make the EmissionSound the sizzle sound you want. Attach the emitter to your launched grenade and voila!
For reference, you could look at the coalition grenade launchers. They do the same thing, minus the sizzle sound
Good luck getting this all to work!