Smith & Wesson · Pistol · In Production · 1996
| Weight (empty) | 411 g (14.5 oz) |
| Overall Length | 160 mm (6.30") |
| Barrel Length | 48 mm (1.89") |
| Height | 109 mm (4.29") |
| Width | 33 mm (1.30") |
| Magazine Capacity | 5 rounds |
| Action Type | Double Action |
| Firing Mechanism | Double Action Single Action |
| Muzzle Velocity | 240 m/s (787 fps) |
| Muzzle Energy | 233 J (172 ft·lbf) |
| Effective Range | 15 m (16 yd) |
| Frame Material | Aluminum Alloy |
Primary Caliber: .38 Special
The Smith & Wesson Model 637 Airweight is a five-shot, double-action/single-action J-frame revolver chambered in .38 Special and rated for continuous +P use. It is the stainless steel and aluminum alloy evolution of the classic Model 37 Chiefs Special Airweight, combining a lightweight aluminum alloy frame with a stainless steel barrel and cylinder for corrosion resistance. The Model 637 features an exposed hammer that permits both double-action and single-action fire, distinguishing it from the...
Country of Origin: United States