The Smith & Wesson Model 642 is a double-action-only revolver built on an aluminum frame and chambered in .38 Special +P / .38 Special. At 16 oz (1 lb) and a 1.875-inch barrel, it's a carry-focused gun. The matte stainless finish and VZ Black & Gray G10 UC High Horn grips set this variant apart from the standard 642, and the XS Front Night Sight paired with a black U-notch rear improves low-light target acquisition. 
 

Key Specifications 

• Model: 642 
• Type: Revolver 
• Action: Double Action Only 
• Caliber: .38 Special +P / .38 Special 
• Barrel Length: 1.875 inches 
• Overall Length: 6.3 inches 
• Capacity: 5 rounds 
• Weight: 16 oz (1 lb) 
• Finish: Matte Stainless 
• Frame Material: Aluminum 
• Grips: VZ Black & Gray G10 UC High Horn (Synthetic) 
• Sights: XS Front Night Sight / Black U-Notch Rear 
   

Detailed Features 

The aluminum frame keeps weight at 16 oz, which is genuinely light for an all-day carry revolver. The chamfered charge holes and beveled cylinder edges help reduce snag risk when drawing from a holster. The XS night sight gives a usable sight picture in low-light conditions, which is relevant for a defensive revolver. The double-action-only mechanism means no external hammer to snag, and the long trigger pull is the only manual safety.

The S&W 642 Matte .38 Special with night sights draws straightforward feedback from carry-focused shooters.

The lightweight aluminum frame is the top selling point. Owners carry it all day without noticing the weight, which is exactly what a pocket or IWB revolver needs to do. Reliability is a common theme -- revolvers in general, and the 642 specifically, have a strong reputation for cycling without malfunction. The simplicity of the DAO mechanism appeals to shooters who want a gun that's ready to go without working through a manual safety.

The night sights get credit as a practical upgrade for a defensive gun carried into varying light conditions.

Constructive feedback focuses on a few consistent points: the DAO trigger pull is long and somewhat heavy, which takes training to manage well. Firing +P loads in a 16 oz gun produces noticeable recoil that some shooters find uncomfortable during extended practice. The 5-round capacity is a known limitation compared to semi-autos. The matte finish can show wear from clothing contact over time with regular carry.