| Actor | Character | Firearm | Notes |
|---|---|---|---|
| Candice Patton | Iris West | MP40 | Episode 8 "Crisis on Earth-X, Part 3" |
| Candice Patton | Iris West | Laser rifle | (mocked-upUTAS UTS-15) Episode 2 "Mixed Signals" |
| Derek Mears | Sylbert Rundine | M136 AT4 | "Honey, I Shrunk Team Flash" (S4E12) |
| Grant Gustin | Barry Allen | Smith & Wesson Sigma | Stainless Slide, "Elongated Journey into Night" (S4E04) |