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 Length167 mm (6.57")
Barrel Length47.6 mm (1.87")
Height117 mm (4.61")
Width33 mm (1.30")
Firing MechanismDouble Action Only
Trigger TypeDouble Action Only
Trigger Pull49 N (11.0 lbf)
Magazine Capacity5 rounds
Magazine TypeRotary
Muzzle Velocity290 m/s (951 fps)
Muzzle Energy341 J (252 ft·lbf)
Effective Range20 m (22 yd)
Barrel RiflingRight Hand
Rifling Twist476 mm (18.74")
Number of Grooves5
Frame MaterialSteel
Barrel MaterialSteel
FinishBlued

Calibers

Features

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.