R.I. Gen. Laws § 11-47-47: Display of weapons.

No person, firm, or corporation shall display in a place of business by means of a window display any pistol, revolver, or other firearm, as defined in § 11-47-2, or any dagger, dirk, bowie knife, stiletto, metal knuckles, or blackjack; provided, that dealers in sporting goods may include in a window display pistols or revolvers upon a permit issued by the chief of police or town sergeant of any city or town. Any person, firm, or corporation violating the provisions of this section shall be punished by a fine not exceeding twenty-five dollars ($25.00) for the first offense and one hundred dollars ($100) for every subsequent offense.