Sleep pistols fire spheres of frozen somnall designed to render rioters unconscious with-out dealing damage. The pistol fires the somnall sphere 40 feet, where it explodes, scattering the drug as a fine mist over a 5-foot square. Any living creature in the affected area must make a DC 15 Fortitude save to avoid falling instantly unconscious. Unconsciousness lasts for 2d4 rounds. The sleep pistol can be adjusted to fire the somnall sphere from 20 to 60 feet; resetting the detonation distance is a full round action