The St. James Police have seized two high powered rifles, a sub machine gun and more than 20 rounds of ammunition in the Canterbury community in the parish.
The guns are reportedly an AK47 assault rifle and an M16 rifle.
The illegal weapons were found during a joint police military operation this morning.
More than 80 illegal weapons have been seized in St James since the start of the year.
The Constabulary is expected to provide further details at its monthly media briefing at 2 this afternoon.