PTRS1941

The PTRS-41, sometimes referred to as the Simonov, is the semi-automatic cousin for the PTRD developed in 1938.

Overview
It played a huge part in the Eastern Front in World War II. It later was utilized in the Korean War as well as the Chinese Civil War by various factions. Like the PTRD, it utilizes the same ammo and is used to take down tanks. Unlike the PTRD, however, it is capable of repeating fire.

During the Peace Walker Incident, Big Boss and his mercenary unit, the Militaires Sans Frontieres, procured design specs for the PTRS1941 while attempting to sneak through the Rio del Jade area undetected. The R&D Team, along with some Anti-tank Rifle specialists, then made their own PTRS1941s.

In-game weapons description
"An anti-tank rifle that uses the same ammo as the PTRD. Basically the same weapon as the PTRD, but with repeat fire capability, making it the most powerful sniper rifle you'll ever see. When the mission calls for firepower above all else, accept no substitutes."

- PTRS1941 weapons description from Metal Gear Solid: Peace Walker