London police seized a semi-automatic rifle, along with ammunition at an Elias Street residence.
Officers executed a warrant on Friday and found the rifle, which had been reported stolen in a break-in last November.
They also found two loaded magazines with 10 rounds each and 180 rounds of ammunition.
A 57-year-old man, 54-year-old female and 30-year-old male, all of London, are charged with possession of stolen property, careless storage of a firearm, careless storage of ammunition and unlawful possession of a non-restricted firearm.
The 30-year-old male is also charged with possession of a firearm while prohibited.
