Police patrols and exercises in Laventille and Belmont between Thursday night and Friday morning led to the seizure of a machine gun and a quantity of ammunition.
Police said members of the Port of Spain Task Force searched four men whom they suspected of being involved in several gang-related shootings in Belmont and Laventille.
They also went to the Gonzales Community Centre, where they found the gun wrapped in a Rastafarian flag under a sheet of galvanise. They also found 20 rounds of ammunition with the gun.
No one was arrested for the find.
The exercise was co-ordinated by ACP Gaffar, Snr Supt Nobee, Supt Kissoonlal, ASP Walker and acting Insp Rajkumar with field operations from Sgt Alexander, Cpls Modeste, Huggins and PCs Bacchus, Remy and Khamchan.