Several LAPD officers and detectives carry the Beretta 92FS as their sidearm, including Detective Sammy Bryant (Shawn Hatosy), Detective Daniel "Sal" Salinger (Michael McGrady), Detective Nate Moretta (Kevin Alejandro) and Officer Bill "Dewey" Dudek (C. Thomas Howell) and a number of other officers. This weapon is on the LAPD approved carry list
Officer John Cooper (Michael Cudlitz) carries a Smith & Wesson 5906 (as evidenced by its double stack frame) as his duty sidearm. This weapon is on the LAPD approved carry list. In "Failure Drill" (S3E09), Adams is seen firing her S&W on the range.
Officer Ben Sherman (Ben McKenzie) carries a Glock 22 as his sidearm. This weapon is standard issue to all LAPD probationary officers. Upon completion of probation, they may choose to switch to another weapon on the approved carry list, or they can stay with the Glock. Officer Chickie Brown (Arija Bareikis) also uses a Glock 22 as her sidearm, although her weapon is fitted with a Surefire X-300 tactical light. Detectve Josie Ochoa (Jenny Gago) also carries the Glock.
Detective Adams (Regina King) uses a Smith & Wesson 3913 as her duty gun. She uses it again in Season 3's "Failure Drill" (S3E09) to bring down a gunman (despite having been seen using a S&W 5906 on range earlier in the episode).
Several LAPD officers are seen using Remington 870 shotguns, which is the standard issue shotgun for the department. They are often seen in the shotgun racks of the police cars.
In "Punching Water" (S3E02), Metro officers are armed with M4A1 Carbines as they raid the home of a gang member when searching for an AK-47 used in a murder.
A gang member uses an AK-47 to murder a family in Season 3's "Punching Water." Police officers later seize the weapon when they raid the home of another gang member who had been hiding it.
