The Century International Arms Inc. AP5 is a derivative of the renowned Heckler & Koch MP5, adapted into a semi-automatic pistol configuration. It's chambered in 9x19mm Parabellum and employs a roller-delayed blowback mechanism for reliable operation. Commonly finished in black with polymer furniture, it typically features a pistol grip and the option of a fixed or retractable stock. Designed primarily for civilian use, the AP5 is favored for recreational shooting, home defense, and sporting applications. Its compact size and manageable recoil make it appealing to those seeking a dependable pistol-caliber firearm. Longer-barreled variants with stocks can also serve law enforcement and security needs. Resembling the MP5 in appearance and operation, the AP5 boasts the iconic MP5 receiver profile, magazine housing, and controls. The roller-delayed blowback system ensures smooth recoil and reliability. Being semi-automatic, it fires one round per trigger pull, aligning with legal standards in many areas. Chambered in 9mm Parabellum, the AP5 accommodates a wide range of ammunition types, from standard target loads to defensive hollow points. Its compatibility with aftermarket accessories allows for customization with various stocks, handguards, optics mounts, and muzzle devices, catering to individual preferences and requirements. Overall, the AP5 delivers a blend of reliability and accuracy in a pistol-caliber platform, inheriting the esteemed design and legacy of the MP5, thus appealing to both enthusiasts and practical shooters alike.