basically modified Grenades/LGB's or maverics that when explode make no or little sound at all, and instead of showing damage on floor, they dont and instead of te explosion, a green or chimical looking colour that stays around for a bit longer OR chemical looking smoke.
they do the same damage as there respective counterparts but sound, look, and kill differently
im not a mod maker myself so i just put this up as an idea for someone else to use