M20 air rifles are a key product of the russian ataman factory. In the production of M20 rifles, barrel blanks from the german company lothar walther are used. The energy source of this pcp pneumatics is a high-pressure tank with a volume of 250 cm3 and a working pressure of 300bar. The sending of the bullet and the cocking of the firing mechanism is carried out by means of a side platoon. The trigger mechanism, developed by the designers of the ataman plant, is built according to a two-whisper scheme. The design of the M20 usm pneumatics allows for adjustments in stroke, force and length.