Smith & Wesson Model 40
Smith & Wesson · Pistol · Discontinued · 1952
Also known as: Centennial
Overview
The Smith & Wesson Model 40 is a compact revolver built on Smith & Wesson's J-frame, introduced in 1952. Chambered in .38 Special with a 5-round cylinder. Built with a steel frame, this revolver continues Smith & Wesson's tradition of robust, reliable revolver construction. The 1.9-inch barrel provides maximum concealment in a snubnose configuration, making this an ideal backup or deep concealment weapon. The double-action-only trigger mechanism provides a consistent pull stroke and eliminates the external hammer, creating a snag-free profile ideal for concealed carry situations where a smooth draw is essential. At 595g (21.0 oz) unloaded, this lightweight revolver strikes a practical balance between carry comfort and manageable recoil during shooting sessions. Smith & Wesson has been producing J-frame revolvers for over seven decades, continuously refining the platform with improved metallurgy, ergonomics, and manufacturing techniques while maintaining the fundamental reliability and accuracy that has made their double-action revolvers the benchmark against which all others are measured.
Specifications
| Weight (empty) | 595 g (21.0 oz) |
| Overall Length | 167 mm (6.57") |
| Barrel Length | 47.6 mm (1.87") |
| Height | 117 mm (4.61") |
| Width | 33 mm (1.30") |
| Firing Mechanism | Double Action Only |
| Trigger Type | Double Action Only |
| Trigger Pull | 49 N (11.0 lbf) |
| Magazine Capacity | 5 rounds |
| Magazine Type | Rotary |
| Muzzle Velocity | 290 m/s (951 fps) |
| Muzzle Energy | 341 J (252 ft·lbf) |
| Effective Range | 20 m (22 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 476 mm (18.74") |
| Number of Grooves | 5 |
| Frame Material | Steel |
| Barrel Material | Steel |
| Finish | Blued |
Calibers
- .38 Special · primary — also known as .38 Spl, .38 S&W Special, 9x29mmR
Features
- Firing modes: Semi Automatic
- Feed systems: Revolving Cylinder
- Safety mechanisms: Grip Safety
- Features: Enclosed Hammer, Grip Safety, Swing Out Cylinder, Transfer Bar Safety, Fixed Sights, Stainless Steel Construction, Exposed Hammer
Production
Production years: 1952-1974
Origin
Country of origin: United States
Discontinued: 1974
Notes
Named 'Centennial' for Smith & Wesson's 100th anniversary in 1952. The grip safety was later removed in the Model 42 and 442 designs as shooters found it unnecessary.
Background
The Centennial was revolutionary for featuring an enclosed hammer, eliminating the risk of the hammer snagging when drawn from a pocket.