The major arms haul - believed to be connected to dissident republicans - was discovered in the grounds of a former convent on the outskirts of the town during a three-day search operation.
The security alert on the Cornakinnegar Road has now ended.
On Saturday, Detective Supterintendent Karen Baxter said: “A number of other items have been recovered, including two viable explosive devices which were made safe by ATO. All of the recovered items have now been seized and removed for forensic examination.”
D/supt Baxter said the find was “a reminder of the continuing need for vigilance and to report any information to the PSNI.”