Smith & Wesson Model 4566
Smith & Wesson · Pistol · Discontinued · 1990
Also known as: Model 4566
Overview
The Smith & Wesson Model 4566 is a full-size semi-automatic pistol chambered in .45 ACP, introduced by Smith & Wesson in 1990. It is part of Smith & Wesson's Third Generation semi-automatic line, offering the proven .45 ACP cartridge in a modern double-action platform that combined the stopping power favored by .45 enthusiasts with the operational advantages of a DA/SA trigger system. The pistol features a stainless steel frame and a stainless steel slide, providing a durable platform designed for years of reliable service in both duty and civilian applications. competing against established .45 ACP platforms like the 1911 and SIG P220, these pistols offered higher capacity and double-action operation that appealed to agencies and shooters wanting modernized .45 ACP duty guns. In S&W's Third Generation numbering system, this model's designation indicates all stainless steel construction.
Specifications
| Weight (empty) | 1148 g (40.5 oz) |
| Overall Length | 203 mm (7.99") |
| Barrel Length | 108 mm (4.25") |
| Height | 138 mm (5.43") |
| Width | 34 mm (1.34") |
| Action Type | Short Recoil |
| Firing Mechanism | Double Action |
| Trigger Type | Double Action |
| Magazine Capacity | 8 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 260 m/s (853 fps) |
| Muzzle Energy | 477 J (352 ft·lbf) |
| Effective Range | 50 m (55 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 406 mm (15.98") |
| Number of Grooves | 6 |
| Frame Material | Stainless Steel |
| Slide Material | Stainless Steel |
| Barrel Material | Stainless Steel |
| Finish | Satin Stainless |
Calibers
- .45 ACP · primary — also known as .45 Auto, 11.43x23mm
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Slide Mounted Decocker Safety, Magazine Disconnect, Firing Pin Safety
- Features: Third Generation Design, Stainless Steel Construction, Mid Size Frame, Single Stack Magazine, Accessory Rail, Ambidextrous Slide Stop, Textured Grip, Loaded Chamber Indicator
Service history
Operators
- Various U.S. Law Enforcement Agencies · adopted 1990
Production
Production years: 1990-1999
Origin
Country of origin: United States
Discontinued: 1999
Notes
The 4566 used a full-size frame with shortened slide and barrel, providing better balance than compact models while remaining more concealable than full-size variants.
Background
Smith & Wesson's Third Generation pistols used a sophisticated model numbering system where each digit conveyed specific information about caliber, frame size, action type, and materials - essentially encoding the entire specification sheet into four digits.