His anti-tank gun Degtyarev began to develop in July 1941 in Kovrov. After several revisions, two options were tested PTR is August 27-28. Automatic rifles both worked by the recoil of the barrel with a long stroke, but the degree of automation of the process of reloading these guns was different. Guns had a box magazine holding five cartridges of different shapes and different locations - one from the bottom, and the other - from the top. The first version of the store resembles a gun shop experienced bass 2 design and Svetlichny Baccini, and the second sample was used to shop from PTR Vladimirov. This store later proved unreliable: the shooting clip pops up in the face of the shooter.