Selected Handgun Detail

Manufacturer
	Smith & Wesson More Info

About the Gun

The 4000 series consists of a veriety of .40 S&W caliber pistols derived from the 5900 series, the so-called 'Third Generation' pattern. They all have staggered-column magazines. These are double-action semi-autos utilizing the well-tried Browning locking mechanism and a Walther-style decocking safety lever on the rear left side of the slide.

Production

Production of this model occurred between 1995 and 2006, with the tactical variant being introduced during this period. Specific manufacturing dates for individual units can be verified through serial number records provided by the manufacturer.

Market value

The MSRP for this gun when new is approximately $800-$900 based on historical data. For a used one in 95% condition, the market value in 2024-2025 is around $500-$600.

Cartridge Specifications
Cartridge:	.40 Smith & Wesson
Alias:	N/A
More Info

Analysis

Early TSW examples retained features closer to the base 4006, while later ones included bobbed hammers in certain batches (e.g., CHP contracts). The design retained the double-action/single-action mechanism with slide-mounted decocker/safety and 11-round double-stack magazine capacity. 4006TSW examples are more commonly available than earlier non-TSW variants due to former-LEO surpluses, particularly CHP-marked units. Magazine and parts availability has declined but remains feasible through secondary sources, with many units showing durability from service use after inspection and maintenance. The model represents one of the final evolutions of Smith & Wesson's metal-frame DA/SA lineup before the transition to polymer striker-fired designs.