A quantity of drugs including cocaine, diamorphine and cannabis was also seized.

The operation, targeting a local organised drug gang, which was led by the Limerick Garda Divisional Drug Unit, saw armed officers stop and search a car and raid a unit at the Galvone Industrial Estate, Galvone.

The ammunition is in various different formats, including 9mm bullets and shotgun cartridges.

Three men, aged in their 60s, 30s and 20s, were arrested and detained under Section 30 of the Offences Against the State Act 1939.

In the course of the operation, two firearms and ammunition, cocaine with an estimated street value of €35,000 and €2,365 cash was seized.