R.I. Gen. Laws § 11-47-20: Sale or possession of silencers.

It shall be unlawful within this state to manufacture, sell, purchase, or possess any muffler, silencer, or device for deadening or muffling the sound of a firearm when discharged; provided, however, that law enforcement officers utilizing said devices while acting within the scope of their official duties, as tactical teams and under the direct supervision of the police chief or the colonel of the state police or their designee, shall not be in violation of this section. Violations of this section shall be punished by imprisonment for not less than one year and one day.