Smith & Wesson J-Frame revolvers have been a trusted choice since 1950, renowned for their simplicity, reliability, and ability to fire full-power rounds. Available in various calibers and three hammer designs, the J-Frame has become the most popular small-frame defense revolver. The M&P340 (no internal lock) is the latest iteration of the classic J-frame Centennial AirLite revolver, blending historic design with modern ergonomic features to create a lightweight and sturdy carry gun. This model features XS 24/7 Tritium Night front sights for enhanced sight acquisition in all light conditions. It boasts a lightweight scandium alloy frame, a stainless steel barrel and cylinder, and an integral U-Notch rear sight. The enclosed hammer design ensures a snag-free draw, and the revolver is rated for continuous +P use, making it a robust and reliable choice for concealed carry. Notably, the M&P340 does not include an internal lock, aligning with preferences for a more straightforward design.