Smith & Wesson J-Frame revolver is designed to fire a full power round and is simple and easy to use as it is reliable. The Model 637 features an aluminum alloy frame with a matte sliver finish; stainless steel barrel and cylinder; integral front and fixed rear sights; external hammer and a black Crimson Trace Lasergrip.
| Barrel Length | 1.88" |
| Sights | Integral Front/Fixed Rear |
| Frame Size | J-Frame |
| Cylinder Finish | Stainless |
| Barrel Finish | Stainless |
| OAL | 6.30" |
| Frame Description | Aluminum Frame |
| Type | Revolver |
| Action | DA/SA |
| Caliber | 38 Special +P |
| Weight Range | 9 oz to 15.99 oz |
| Hammer Style | Exposed |
| FireArm | yes |
| Capacity | 5 |
| Weight | 15.40 oz |
| Grips | Crimson Trace Lasergrip |
| Includes | Crimson Trace Lasergrip |
| Barrel Length Range | 1" to 1.99" |
