You’ll find the Smith & Wesson Model 639, introduced in 1984, represents S&W’s second-generation evolution of their all-stainless steel 9mm semi-automatic pistols. It features a double-action/single-action trigger system, 4-inch barrel, and weighs 1.719 lb. The pistol incorporates a firing pin safety system and optional ambidextrous controls. While it’s known for exceptional durability and corrosion resistance, you’ll notice the heavier trigger pull characteristic of its era. There’s more to discover about this classic defensive pistol’s specifications and heritage.
Key Takeaways
- Second-generation Smith & Wesson semi-automatic pistol introduced in 1984, featuring all-stainless steel construction and firing pin safety system.
- Full-size 9x19mm pistol weighing 1.719 pounds with a standard 4-inch barrel and double-action/single-action trigger mechanism.
- Features adjustable rear sights, optional ambidextrous controls, and enhanced ergonomics with a hooked trigger guard design.
- Market prices range between $345-$446, with new models commanding higher prices and showing steady value appreciation.
- Offers exceptional durability and corrosion resistance, though known for heavy trigger pull and limited parts availability.
Description
The Smith & Wesson Model 639, introduced in 1984, represents the manufacturer’s second-generation evolution of their all-stainless steel semi-automatic pistol line. You’ll find a firing pin safety system and options for ambidextrous safeties and adjustable rear sights.
The stainless steel construction features a hooked trigger guard on later models, though its double action trigger pull is notably long and heavy compared to other generations.
Price Range
Market prices for a Smith & Wesson Model 639 run between $345-446, with new models commanding the higher end of that range. You’ll find the carbon steel frame and adjustable rear sight contribute to value retention, with prices rising $19.04 for new models over the past year. Pachmayr grips enhance resale value for used models.
| Condition | Current Value | 12-Month Increase |
|---|---|---|
| New | $446.10 | $19.04 |
| Used | $345.13 | $14.73 |
| 80% Used | $224.34 | N/A |
| Trade-In | $289.96 | N/A |
| Private | $345.13 | N/A |
Specifications
The Smith & Wesson Model 639 is a full-size 9x19mm pistol constructed entirely of stainless steel, making it heavier than its aluminum-framed predecessors. You’ll find this semi-automatic handgun comes standard with a double-action/single-action trigger system and accepts standard-capacity magazines. The robust design incorporates essential safety features while maintaining the classic Smith & Wesson second-generation auto pistol aesthetics.
| Specification | Details |
|---|---|
| Weight | 1.719 lb (0.780 kg) |
| Construction | Stainless Steel |
| Caliber | 9x19mm Parabellum |
| Magazine Capacity | 8 rounds |
Weight
When fully assembled, Smith & Wesson’s Model 639 pistol weighs precisely 1.719 pounds (0.780 kilograms). As one of Smith & Wesson’s second generation pistols, this all-stainless version maintains a consistent weight specification across its production run.
The weight optimally balances the pistol’s 9x19mm caliber configuration, ensuring reliable performance without compromising the shooter’s control during operation.
Barrel Length
Standard across every Model 639 manufactured between 1981 and 1988, a precision-engineered 4-inch stainless steel barrel defined this pistol’s core specifications. This first-generation Smith & Wesson barrel length provided optimal performance for the 9x19mm cartridge while maintaining portability.
The distinctive hooked trigger guard and safety lever complemented the barrel’s role in differentiating the Model 639 from other S&W semi-automatic variants.
Material Made Out Of
Built entirely from stainless steel, Smith & Wesson’s Model 639 represented a significant shift from traditional blued steel firearms of its era. The pistol’s composition relied on stainless steel’s superior metallurgical properties, including enhanced corrosion resistance and durability.
This manufacturing process yielded a relatively lightweight design at 1.719 pounds, making it suitable for both duty and civilian use between 1981-1988.
Chambered In
The Smith & Wesson Model 639 chambers the widely-adopted 9x19mm Parabellum cartridge, also known as the 9mm Luger. You’ll find this caliber features prominently in the pistol’s design, offering standard ammunition compatibility with other 9mm handguns of the 1980s.
The Model 639’s ballistic performance aligns with contemporary law enforcement and civilian requirements during its 1981-1988 production run.
Capacity
Packing a standard 8-round magazine, the Model 639 holds 9x19mm Parabellum ammunition in its single-stack configuration. The magazine capacity provides you with a total ammunition capacity of 8+1 rounds when carrying with one in the chamber.
This round capacity was standard for second-generation S&W semi-automatic pistols of the era, maintaining consistency with its predecessor, the Model 39 series.
Trigger Pull
Featuring a dual-action trigger mechanism, the Model 639 delivers 8-10 pounds of pull weight in double-action mode and a lighter 4-5 pounds in single-action operation. You’ll find the trigger pull quality varies based on individual trigger pull adjustments.
Many users note the heavy double-action pull as a drawback of second-generation models, though later third-generation S&W pistols received significant trigger pull improvements.
Safety?
Multiple safety features characterize the Model 639’s design, including a standard firing pin safety system and optional ambidextrous safety levers that accommodate both left and right-handed shooters.
Later production models incorporated a hooked trigger guard design for enhanced user safety. During the firearm’s production run, S&W implemented a recall process to address specific safety concerns related to the firing pin mechanism, demonstrating their commitment to product reliability.
Action
The Smith & Wesson Model 639 operates with a traditional double-action/single-action trigger mechanism, allowing shooters to fire the first round with a longer, heavier pull followed by shorter, lighter single-action pulls for subsequent shots.
The all-stainless steel construction enhances recoil control, while the adjustable rear sight aids in shooting accuracy. You’ll find the trigger mechanism smooth and consistent throughout its operation.
Optic Ready?
Unlike modern pistols, this classic S&W Model 639 wasn’t designed with optics mounting capabilities. The slide features traditional fixed iron sights without any provisions for red dot mounting.
While custom milling options exist for adding an optic, you’ll face significant optic mounting challenges that require specialized gunsmithing work. Consider potential resale value concerns, as modifications could impact the pistol’s collectibility and originality.
Review
You’ll find the Model 639’s all-stainless steel construction and protected adjustable sights contribute to its durability and accuracy, while the firing pin safety system and optional ambidextrous controls enhance its overall safety features.
The pistol’s primary drawback is its notoriously heavy and rough double-action trigger pull, which can affect your shooting performance compared to first and third-generation S&W models. Despite the trigger issues, the Model 639 maintains S&W’s reputation for reliability, making it a dependable defensive firearm that’s still valued between $500-600 in today’s market.
Pros
Built with exceptional durability, Smith & Wesson’s Model 639 offers several noteworthy advantages for enthusiasts seeking a reliable stainless steel pistol. You’ll benefit from superior corrosion resistance and enhanced ergonomics with its hooked trigger guard design. The integrated firing pin safety system ensures dependable operation in various conditions.
| Feature | Benefit | Performance |
|---|---|---|
| All-Stainless Construction | Corrosion Resistant | High |
| Hooked Trigger Guard | Enhanced Grip | Excellent |
| Firing Pin Safety | Operational Security | Standard |
| Ambidextrous Controls | User Flexibility | Optional |
| Durability | Long Service Life | Superior |
Cons
Despite its robust construction, the Model 639 exhibits several notable drawbacks that warrant consideration. You’ll encounter a heavy trigger pull in second-generation models, limited parts availability for aging variants, and cosmetic imperfections in the stainless steel finish. Factory magazines lack modern refinements, while adjustable rear sights require frequent zeroing.
| Issue | Impact | Solution |
|---|---|---|
| Trigger Pull | Compromised accuracy | Gunsmith tune-up |
| Parts Scarcity | Maintenance challenges | Stock spare components |
| Steel Finish | Surface marking | Regular maintenance |
| Magazine Quality | Reliability concerns | Aftermarket upgrades |
| Sight Stability | Inconsistent targeting | Professional adjustment |
Reliability
The Smith & Wesson Model 639’s reliability record spans over four decades of service in law enforcement and civilian use. You’ll find its stainless steel construction contributes to exceptional longevity, even in humid conditions.
With proper cleaning and maintenance, the pistol maintains consistent accuracy. The double-action mechanism has proven dependable through extensive testing, and the simple design allows for quick field stripping and reassembly.
Similar Models
Several variants of the Smith & Wesson Model 39 series preceded and influenced the Model 639’s development.
The Model 439 featured an aluminum frame, while the Model 539 utilized carbon-steel components. The Model 39-2 introduced extractor design improvements in 1957 and 1971.
You’ll find the Model 639 stands out with its all-stainless steel construction, featuring optional ambidextrous safety levers and early models’ distinctive short, wide extractor.
Similar Models From Other Manufacturers
While Smith & Wesson’s Model 639 made its mark in the handgun market, other manufacturers developed comparable firearms during the same era.
You’ll find similar handgun choices in the CZ-75 compact and Sig Sauer P226, both featuring all-steel 9mm construction.
Alternative pistol options include the Glock 19’s comparable size profile, while revolver enthusiasts might consider the Rossi RP63 or larger Ruger GP100 in .357 Magnum.
Maintenance
Proper maintenance of your Model 639 requires systematic cleaning and lubrication to ensure optimal performance.
Your cleaning regimen should focus on disassembling the slide, barrel, and recoil spring assembly. During component inspection, examine the stainless steel parts for carbon buildup or wear.
Complete your lubrication routine using designated firearm solvents, oils, and lightweight greases to maintain the pistol’s reliability.
History
The Smith & Wesson Model 639 emerged in 1984 as an all-stainless steel evolution of the Model 439 and 539 pistols. The design changes included a firing pin safety system and optional ambidextrous safeties with adjustable rear sights.
While sharing components with first-generation Model 39 pistols, it featured less refined finishing. Late production models incorporated a hooked trigger guard before the Model 3906 replaced it in 1988.
Frequently Asked Questions
What Caliber Is the Smith and Wesson 639?
You’ll find the 639 is chambered in 9x19mm Parabellum/Luger, which has been a standard NATO cartridge since 1955. It’s designed with a double-action/single-action trigger pull weight of approximately 12/4 pounds.
The pistol features a manual safety lever and magazine disconnect safety. Your magazine capacity is 8 rounds in the standard configuration.
When you’re operating this firearm, you’ll appreciate the proven 9mm performance in a classic aluminum-framed design.
Do Smith and Wesson Revolvers Hold Value?
You might think revolvers are outdated relics, but you’d be surprised – Smith & Wesson revolvers are actually excellent value holders. Their resale prices over time consistently remain strong, often retaining up to 80% of their original value.
Market demand trends show particular strength in classic models like the Model 29, while collector’s value increases for mint-condition pieces. Manufacturing details, including S&W’s renowned quality control and durability, contribute significantly to their sustained worth in the firearms market.
How Much Does a SD9 Smith & Wesson Cost?
You’ll find the Smith & Wesson SD9’s current market price typically ranges between $379-$449, depending on your location and dealer. The striker-fired 9mm pistol’s availability varies across online retailers and local gun shops.
When considering buying, you’ll want to compare prices between authorized dealers, as prices can fluctuate. The SD9 features a 16+1 capacity, polymer frame, and stainless steel slide, making it a value-focused option in S&W’s defensive pistol lineup.
What Is the Rarest Smith and Wesson Gun?
Like diamonds in a coal mine, rare Smith and Wesson models capture collectors’ hearts. You’ll find that the Model 15-22 is considered the rarest, with only about 1,000 units manufactured.
For antique Smith and Wesson firearms enthusiasts, the Model 53 in .22 Remington Jet follows closely, with less than 3,000 produced between 1964-1974.
The iconic Model 29 .44 Magnum also ranks among the rarest, with fewer than 1,000 made in its first production year.
Conclusion
You’ll find the Smith & Wesson Model 639 represents a significant evolution in 9mm semi-automatic pistols, with over 35,000 units manufactured between 1981-1988. Its stainless steel construction marked a departure from traditional blued finishes, while maintaining the proven double-action design of the Model 39. When you’re considering classic S&W pistols, the 639’s production numbers showcase its role in bridging traditional and modern manufacturing techniques.
0 Comments