The M&P 340 is our latest innovation on our classic J-frame Centennial AirLite® revolver. We took an historic revolver and added modern, ergonomic features making this a lightweight, yet sturdy, carry gun. Lightweight scandium alloy frame, stainless steel barrel and cylinder, XS Sight with Tritium, Integral U-Notch rear sight, snag free enclosed hammer and rated for +P use.