The Smith & Wesson Model 686, often referred to as the "Smith & Wesson CAM," isn't technically named as such by the manufacturer. However, the term "CAM" is frequently used by enthusiasts and collectors to refer to its unique internal locking mechanism, the Cam-Lock system. This system significantly distinguishes the 686 from other revolvers and is a key factor in its enduring popularity. This article explores the history, mechanics, and lasting impact of this revolutionary revolver and its distinctive cam-locking system.
The Smith & Wesson Model 686: A Legacy of Reliability
The Smith & Wesson Model 686, introduced in 1981, is a six-shot, .357 Magnum revolver. Its stainless steel construction, robust frame, and accurate performance quickly established it as a favorite among law enforcement, competitive shooters, and hunters alike. However, what truly set the 686 apart—and what earned it the colloquial moniker "CAM"—was its innovative internal locking mechanism.
Understanding the Cam-Lock System
Unlike older revolver designs relying on simpler systems, the 686 utilizes a cam-locking system. This system enhances the revolver's overall strength, reliability, and safety. The cam itself is a precisely engineered component that interacts with the cylinder during rotation and locking.
- Enhanced Strength: The cam-lock distributes stress more evenly across the cylinder and frame during firing, resulting in a more durable and less likely to experience frame damage or cylinder binding.
- Improved Reliability: The precise engagement of the cam ensures that the cylinder is securely locked in place before firing, minimizing the risk of misfires or malfunctions.
- Increased Safety: The design inherently mitigates the potential for accidental discharge through its rigorous locking mechanism. The cam must be properly engaged for the hammer to fall, creating a substantial safety feature.
Comparing the Cam-Lock to Other Revolver Locking Systems
Many revolvers employ different locking systems, each with its own strengths and weaknesses. Understanding these differences helps appreciate the advantages of the Smith & Wesson cam-lock design.
Traditional Swing-Out Cylinder Revolvers
These revolvers, often seen in classic designs, utilize a swing-out cylinder mechanism. While simple and easily accessible for reloading, they can sometimes exhibit some cylinder play over time, negatively impacting accuracy.
Other Locking Systems
Other locking systems may involve simpler ratchet mechanisms, which, while functional, may not offer the same level of strength and reliability as the cam-lock system found in the Smith & Wesson Model 686 and its successors.
The Enduring Appeal of the Smith & Wesson CAM Revolver
The Smith & Wesson Model 686, with its robust construction and innovative cam-locking system, has earned its place as a classic and highly sought-after revolver. Its reliability, accuracy, and enduring popularity speak volumes about its design and engineering. The "CAM" designation, while unofficial, has become synonymous with its superior design and performance, cementing its legacy among firearms enthusiasts.
The Future of Cam-Lock Technology
While the basic principles of the cam-lock system remain largely unchanged since its introduction, Smith & Wesson continues to refine and improve its revolver designs. Future iterations might see further enhancements to the cam-lock system, resulting in even greater reliability and safety features. However, the core elements that made the Model 686 so successful—its robust construction and the innovative cam-locking mechanism—are likely to remain cornerstones of Smith & Wesson's revolver production for years to come. The legacy of the Smith & Wesson "CAM" is clearly secure.
