description Smith & Wesson 642 Overview
The Smith & Wesson Model 642 is a compact J-frame revolver chambered in .38 Special. It features a fully enclosed hammer, making it double-action-only and preventing the hammer from snagging during pocket carry. The revolver uses an aluminum alloy frame paired with a stainless steel cylinder, classifying it within Smith & Wesson's Airweight line. The J-frame is the company's smallest revolver frame size.
help Smith & Wesson 642 FAQ
Why is the Smith & Wesson Model 642 called hammerless?
Its hammer is fully enclosed inside the frame, so there is no exposed spur to catch on clothing during a draw. The Model 642 is a double-action-only J-frame revolver chambered in .38 Special. [Smith & Wesson](https://www.smith-wesson.com/article/j-frame-hammer-time)
How many rounds does the Model 642 hold?
The Model 642 uses a five-shot cylinder, which is typical of Smith & Wesson's compact J-frame revolvers. Its small aluminum-alloy frame keeps the Airweight version lighter than many steel-frame .38 Special revolvers.
Can a Smith & Wesson 642 fire .38 Special +P ammunition?
Many Model 642 variants are rated for .38 Special +P, but the exact marking and owner's manual for the individual revolver should control. The cartridge designation and pressure rating should be confirmed before using +P ammunition.
How is the Model 642 different from the Smith & Wesson Model 637?
The Model 642 has an enclosed hammer and is double-action-only, while the Model 637 has an exposed hammer and can be fired single-action or double-action. Both are compact five-shot .38 Special J-frame revolvers.
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