Ruger MP9

The Ruger MP9 (also sometimes erroneously referred to as the Ruger MP-9) is a pistol-caliber carbine manufactured by Sturm, Ruger & Co. It is part of the Ruger PC Carbine series. The "MP" in the name stands for "Military and Police," reflecting its target market. It is a semi-automatic, blowback-operated firearm chambered primarily in 9mm Luger (9x19mm).

Key features of the Ruger MP9 include:

• Takedown Design: The rifle is designed for easy takedown and reassembly, allowing for convenient storage and transport.
• Interchangeable Magazine Wells: The firearm utilizes interchangeable magazine wells, allowing it to accept different types of magazines, including those compatible with Ruger pistols and Glock pistols, depending on the specific magazine well installed.
• Adjustable Ghost Ring Sight: Typically equipped with an adjustable ghost ring rear sight and a protected blade front sight.
• Threaded Barrel: Often features a threaded barrel for the attachment of muzzle devices such as suppressors or compensators.
• Polymer Stock: Incorporates a durable polymer stock for comfortable handling and improved control.
• Ambidextrous Controls: Many versions include ambidextrous controls such as the magazine release and charging handle to accommodate both left- and right-handed shooters.

The Ruger MP9 is popular for its versatility, reliability, and ease of use, making it suitable for recreational shooting, home defense, and law enforcement applications. It is a direct blowback carbine, using the force of the cartridge explosion to cycle the action. The modular design and readily available aftermarket accessories contribute to its popularity among firearm enthusiasts.

The "MP9" designation distinguishes it within the PC Carbine family, although externally, it is visually very similar to other models within the series. The specific features and configurations available may vary depending on the production year and variant.