Compact stainless steel double-action revolver chambered in .357 Magnum with 2.13" barrel and synthetic grip. Built for concealed carry and backup duty with proven reliability.
The M640 represents a time-tested approach to personal protection—a small-frame revolver that delivers serious stopping power in a package designed for concealment and quick deployment.
This revolver has earned its reputation among law enforcement and civilian shooters alike. The .357 Magnum cartridge offers excellent stopping power, and the compact profile makes it ideal for ankle carry, pocket carry, or backup duty. The stainless steel construction ensures reliability in harsh environments.
The double-action-only mechanism eliminates the need for a manual safety—simply draw and fire. This straightforward operation is invaluable when seconds count.
Smith & Wesson's engineering ensures smooth operation and consistent accuracy despite the short sight radius. Whether you're a seasoned shooter or new to revolvers, the M640's simplicity and reliability make it a dependable choice for personal defense.