Additional information
| Action | Double / single action |
|---|---|
| Barrel length | 1.875 inches |
| Caliber | .38 Special |
| Capacity | 5 rounds |
| Frame material | Aluminum alloy & stainless steel |
| Finish | Matte silver |
| Grips | Crimson trace laser grips |
| Sights | Fixed front and rear sights |
| Weight ounces | 28.0 |
| Type | Revolver |
| Model | 637 |
| Frame designation | J frame |
| Hammer style | Exposed |
| Safety | Internal lock |
