Selected Handgun Detail

Smith & Wesson
Model 3904
Smith & Wesson Pistol 3904 9 mm Variant-1
Scale To:
Gun Dimensions Width:No Data
Length:7.5-in Height:No Data
Barrel:4-in Weight:28.5-oz
Variant 1 of 2
Gun Rankings
  • Power Factor (124 grain bullet)142600
  • Recoil Factor (124 grain bullet)4.85 ft-lb
  • Total Capacity9 rounds
  • ConcealabilityFair
  • Defense Factor71%
Gun Specifications
Type:Pistol
Caliber:9 mm
Action:recoil operated semi-automatic
Trigger:double-action (DA/SA)
Safety:slide mounted ambi safety
Magazine:8-round
Frame:aluminum alloy
Grip:wraparound textured polymer
Sights:fixed blade front, adjustable rear
Notes:
Manufacturer
Smith & Wesson
More Info
About the Gun

Third generation single-stack double action semiautomatic pistol. Descendant of the first generation model 39 and second generation model 439. Exposed hammer, beveled magwell, extended squared trigger guard, one piece wrap-around grip.

Production

Production of this firearm began in 1988 and continued until 1991. It was part of a series introduced during that period, with manufacturing primarily occurring in the late 1980s and early 1990s before being discontinued.

Market value
Last updated: 7/10/2025

For this gun, the MSRP is approximately $500 when new. In 95% condition, the used market value in 2024-2025 is around $350-$400, based on recent auction and pricing data.

Cartridge Specifications
Cartridge: 9 mm Luger
Alias: 9 mm Parabellum
More Info
Ballistics for This Gun
Selected Bullet Mass:124 grains
MV:1150 ft/sec ME:364 ft-lbs
Analysis

This 9mm pistol from a well-known manufacturer offers a solid option for shooters seeking a reliable duty or personal defense firearm. Its accuracy is commendable, delivering consistent groupings at moderate ranges, thanks to a well-designed barrel and sight system. The ergonomics are a notable strength, with a grip that accommodates a wide range of hand sizes, promoting a secure hold during extended use. Reliability is another key asset, as it functions smoothly under various conditions with minimal malfunctions when properly maintained. However, maintenance can be somewhat cumbersome due to the complexity of disassembly, which may frustrate less experienced users. Parts availability could also pose challenges, as some components are not as widely stocked. The trigger pull is crisp but on the heavier side, potentially affecting precision for some shooters. Felt recoil is moderate, manageable for most, though it may feel sharp with hotter loads.

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