Armory & Fleet
Department weapons at the armory and police vehicles from the fleet.
Armory
While on duty, open Armory from the PD desk menu. Stock includes a combat pistol, pump shotgun, stun gun, nightstick, ammo, medkits, and armor. There is no public Ammu-style blip for it.
Police Vehicles
The Cop Vehicles dealership has Patrol, Unmarked, Pursuit, and Heavy sections. From the interaction menu, Police Garage lets you spawn, store, and repair department vehicles.