MP5A2

The Heckler and Koch MP5A2 is the second model of a line of 9mm submachine guns made in Germany acting as an offshoot of the G3 from the West German Army.

Overview
During 1964, Heckler & Koch started developing the MP5 lines after the success of the G3 automatic rifle, of which it was only one of four lines that acted as offshoots to the G3. In 1966, the MP5 line was adopted by the German Federal Police, the border guard, and the army special forces. The MP5A2 acted as the second model for the development, as well as the primary model. It was lightweight, air-cooled, selective fire delayed blowback operated 9x19mm Parabellum weapon with a roller-delayed bolt and fired from a closed bolt (bolt forward) position. It also had a fixed stock made of a synthetic polymer.

During the events of the Peace Walker Incident in 1974, Big Boss and his mercenary group, the Militaires Sans Frontieres, procured design specs for the MP5A2. They eventually modified it to include a suppressor, and eventually procured design specs for one of its successor models, the MP5SD2.

In-game weapons description
"A submachine gun created as an offshoot of the G3, the mainstay rifle f the West German military. It uses European standard 9mm ammo with more or less average firepower. Unlike most submachine guns, the MP5A2 uses a closed-bolt firing mechanism, which puts it a cut above its competitors in terms of accuracy. This higher accuracy allows for precision targeting of specific body parts at a greater distance than other submachine guns, giving it an almost assault rifle-like feel. A solid choice for close- to mid-range combat. (Rank 4) Equipped with a limited-use suppressor. The suppressor will eventually wear out, so use it prudently."

- MP5A2 weapons description from Metal Gear Solid: Peace Walker