Bomb disposal experts were called out after a fishing boat caught unexploded munitions - including a grenade - in its nets.
The incident happened at about 17:50 on Sunday as the boat was coming into Stranraer harbour.
It radioed ahead and was subsequently left moored outside the harbour overnight until disposal experts arrived in the area.
They carried out controlled explosions of the weapons on Monday.
Stranraer RNLI team was also called out to help deal with the incident.