The Walther A115 is a prototype German semi-automatic rifle.
The A115 was a prototype rifle developed by Walther. It never took off, though the design evolved into the MkB 42(W). Only three rifles were reportedly made; two are known to exist, with one being in the Bundeswehr Military History Museum.
The rifle is composed of three different parts stuck together using rivets or pins. The rifle uses an odd annular gas piston with a rotating bolt. The receiver is made of stamped steel, and the magazine is also made of stamped steel.