| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Dylan McDermott | Detective II Jack Larsen | Glock 17 | - |
| Jamie McShane | PI Gene Meadows | Smith & Wesson 910 | "Fun and Games" (S1E17) |
| Jay Karnes | Dr. Adam Lewis | Smith & Wesson 3913 | "Crazy For You" (S1E09) |
| Maggie Q | Lt. Beth Davis | Springfield Armory XD-S | - |
| Mariana Klaveno | Det. Lawrence | Glock 26 | - |
| Victor Rasuk | LAPD Detective I Ben Caldwell | Glock 17 | - |