Smith & Wesson M&P340 J-Frame 1.875 in .357 Mag 5-Rd No Internal Lock

About this product

The Smith & Wesson M&P340 is a compact J-frame revolver built around a lightweight scandium alloy frame and designed for discreet carry and dependable performance. It features a short 1.875 inch barrel, a five-round cylinder, and an enclosed (shrouded) hammer for reduced snag when drawing. The M&P340 is fitted with an XS Sights 24/7 tritium front sight and an integral U-notch rear sight. This model is offered with no internal lock and a matte black finish.

Key Specifications

• The caliber is .357 Magnum / .38 Special.
• The cylinder capacity is 5 rounds.
• The barrel measures 1.875 inches.
• The overall length is 6.31 inches.
• The action is Double Action Only.
• The frame material is Scandium alloy.
• The sights are XS Sights 24/7 tritium front and integral U-notch rear.
• The grip material is black synthetic / rubber.
• The finish is described as matte black / Armornite.

Small, lightweight, and purpose-built for concealed carry, the M&P340 combines a modern scandium-frame design with proven J-frame ergonomics and night-capable sighting. Its five-shot cylinder and enclosed hammer keep carry profiles compact while full-power .357 Magnum capability provides versatility for owners who require a compact revolver with real-world performance. The XS tritium front sight enhances sight acquisition in varied light conditions, making this model a practical choice for everyday carry or as a reliable backup piece.

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