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The Smith & Wesson 645: A Comprehensive Look at a Classic .45 ACP Pistol

A Journey into Stainless Steel

From the clatter of steel on the range to the quiet confidence it instilled in its owners, the Smith & Wesson 645 earned its place as a respected and reliable handgun. This stainless steel workhorse, chambered in the formidable .45 ACP, represents a significant chapter in the history of Smith & Wesson, and a compelling option for anyone interested in classic firearms. This article will dive into the world of the Smith & Wesson 645, exploring its origins, features, performance, and enduring appeal to shooters and collectors alike.

The Smith & Wesson 645 emerged during a period of innovation and change for the iconic firearms manufacturer. Smith & Wesson made a pivotal decision, transitioning from blued steel to the more resilient and corrosion-resistant stainless steel in their handgun production. This shift wasn’t merely an aesthetic choice; it was a commitment to durability and longevity, promising a longer lifespan and reduced maintenance for their firearms. The 645, along with other models that followed, benefited greatly from this design philosophy. The inherent qualities of stainless steel would contribute to the pistol’s reputation for withstanding the test of time and the rigors of frequent use.

A Legacy in .45 ACP

The .45 Automatic Colt Pistol, or .45 ACP, is a cartridge steeped in history. Developed in the early 20th century, it quickly gained notoriety for its stopping power and effectiveness. The .45 ACP’s large diameter and substantial weight imparted significant energy to the target, making it a favored choice for law enforcement and military forces. The Smith & Wesson 645, chambered in this legendary caliber, inherited its robust reputation. The marriage of the dependable .45 ACP round and a well-engineered platform proved to be a potent combination, solidifying the 645’s appeal to those who valued both performance and stopping power.

Roots of Design

The design of the Smith & Wesson 645 can be traced back to previous models. S&W had already gained experience in producing high-quality handguns with excellent ergonomics. The 645 built upon this foundation, incorporating design improvements and refinements. While the exact influences are complex, the pistol reflects Smith & Wesson’s ongoing commitment to improving the safety, reliability, and user experience of their firearms. The 645 was designed to address the needs of law enforcement, military, and civilian users, all of whom prioritized reliability, accuracy, and ease of operation.

Evolution and Variations

The Smith & Wesson 645 wasn’t a single, static entity. It evolved over the years, undergoing minor changes and improvements. While the core design remained consistent, variations in features such as sights, grip styles, and finishes subtly distinguished different production runs. This refinement process ensured that the 645 remained competitive in the evolving handgun market. It is important to explore the various production and models to recognize their distinctive characteristics. These minor variations make collecting and appreciating the 645 even more interesting.

Key Components and Their Functions

The Smith & Wesson 645 is more than just a collection of parts; it’s a precisely engineered instrument. The frame, the foundation of the pistol, is typically made of stainless steel. This choice of material enhances durability and corrosion resistance, making the 645 a firearm that can withstand the harsh conditions of everyday use. The slide, also made of stainless steel, houses the internal components responsible for the firing cycle. Its smooth, reliable operation is critical to the overall performance of the handgun. The barrel, often constructed of stainless steel, features precisely cut rifling designed to impart spin to the bullet, improving accuracy.

The operating mechanism is a cornerstone of the 645’s appeal. The design incorporates a double-action/single-action trigger. This allows for the possibility of an initial long, heavier double-action pull for the first shot, followed by subsequent shots with a lighter, crisper single-action pull. The 645 offers the option of safely carrying the gun with the hammer down. This action type contributes to the pistol’s safety and versatility.

The Smith & Wesson 645 boasts a variety of safety features. An ambidextrous safety/decocker allows the user to safely lower the hammer and secure the pistol. A firing pin block prevents the firing pin from striking the primer unless the trigger is fully depressed. These features prioritize the safety of the user and reduce the risk of accidental discharge. These safety elements, coupled with the rugged construction, further solidify the reputation of the 645 as a safe and reliable firearm.

The sights are a critical element for target acquisition. The 645 generally had standard fixed sights, or in some models, adjustable sights. These sights are designed to provide the shooter with a clear sight picture, allowing for accurate shots at various ranges. The user experience, especially for novice shooters, is important in building confidence in using a handgun.

The grips, available in various materials such as synthetic polymers or wood, offer a comfortable and secure hold. They are carefully shaped to fit the hand and to improve control during rapid fire. The grips contribute significantly to the overall ergonomics and feel of the gun. Their materials and construction play a vital role in the overall experience of shooting the 645.

Measurements and Mass

The Smith & Wesson 645 is a substantial firearm. The dimensions of the pistol, including its overall length, height, and width, reflect its robust construction. The weight of the 645, though heavier than some modern designs, contributes to its ability to manage recoil. The dimensions and weight are essential elements for the shooter’s overall experience, making the 645 a firearm with a solid, authoritative feel.

Evaluating Performance and Reliability

The Smith & Wesson 645 is renowned for its accuracy. The combination of a well-designed barrel, a consistent trigger pull, and quality sights allows for accurate shot placement at practical ranges. The 645’s inherent accuracy makes it a viable choice for both target shooting and personal defense. The precision with which the 645 is manufactured contributes to the shooter’s success and the pistol’s overall appeal.

The reliability of the Smith & Wesson 645 is another significant factor contributing to its popularity. The stainless steel construction, coupled with the robust design, promotes a high level of dependability. The 645 is known for its ability to function flawlessly under various conditions, making it a trusted choice for those who prioritize reliability. Proper maintenance and cleaning further enhance the reliability of the 645.

The recoil characteristics of the 645, while present due to the powerful .45 ACP cartridge, are manageable. The weight of the pistol and the well-designed ergonomics help mitigate recoil, making it comfortable for shooters of various experience levels. The user can quickly regain control of the weapon for follow-up shots.

The overall feel, or ergonomics, of the Smith & Wesson 645 contributes significantly to its appeal. The grip is shaped to fit comfortably in the hand, promoting a secure hold. The placement of the controls, such as the slide release and the magazine release, is well-considered, allowing for quick and efficient operation. The design allows for ease of operation.

Serving Various Purposes

The Smith & Wesson 645 has been used by different organizations. While not as widely adopted as some other models, it found its place in law enforcement agencies, primarily as a reliable sidearm. Its durability and chambering in the .45 ACP made it an attractive option for departments seeking a robust and effective handgun.

The Smith & Wesson 645 is also a popular choice among civilians. Its robust design, reliable operation, and powerful .45 ACP chambering make it suitable for personal defense. The availability of various holster types and accessories further enhances its appeal for civilian users. The 645 also appeals to target shooters seeking a classic, well-made handgun.

The 645 has sometimes been used in competitive shooting, but its design and features make it less competitive compared to specialized competition pistols. Nevertheless, some shooters appreciate the 645 for its reliability and potential.

Analyzing Strengths and Weaknesses

The advantages of the Smith & Wesson 645 are numerous. The stainless steel construction results in excellent durability and corrosion resistance. The design provides robust reliability, contributing to its long-term performance. The power of the .45 ACP cartridge is a key benefit, providing significant stopping power. The ergonomics of the grip and overall design contribute to a comfortable and manageable shooting experience.

However, the Smith & Wesson 645 also has some disadvantages. The size and weight are considerable, making it less ideal for concealed carry. The magazine capacity, while sufficient for many applications, is lower than some later designs. The availability of parts and accessories is also more limited compared to more modern models. The trigger feel, while adequate, may not be as refined as that of some other designs.

Comparing the 645

The Smith & Wesson 645 can be compared to other models. The 4506, a similar stainless steel pistol, represents a direct competitor. However, the 645 offers a distinctive design and trigger system. The 1006, chambered in 10mm, is another option from S&W. The 1006 offers superior cartridge power. The classic Colt 1911, another .45 ACP pistol, offers a completely different design and trigger system. The 1911 remains popular, but the Smith & Wesson 645 offers a different take.

Valuation and Collectibility

The Smith & Wesson 645 is a sought-after pistol. The value of the 645 depends on several factors, including its condition, rarity, and any special features. Well-maintained examples in excellent condition command a premium. The collectibility of the Smith & Wesson 645 is driven by its historical significance, its reputation for reliability, and its relatively limited production.

Cleaning is key to the pistol’s longevity and accuracy. It is recommended to thoroughly clean and lubricate the Smith & Wesson 645 after each use.

Concluding Thoughts

The Smith & Wesson 645 is a well-crafted and dependable pistol. It is a testament to the quality of manufacturing. It’s a firearm with historical significance. The 645 offers shooters a unique blend of classic design and modern features. The stainless steel construction, the powerful .45 ACP chambering, and the well-engineered design have solidified the 645’s place in firearms history. The Smith & Wesson 645 appeals to collectors. It remains an excellent choice for those seeking a reliable and accurate handgun.

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