As practice shows, today's "tank masters", paying great attention to the materiel of tanks, as a rule, do not delve into the specifics of tank weapons. They can spend hours savoring the details of the performance characteristics of combat vehicles: armor thickness, movement speed, power reserve, etc. Their knowledge of the artillery armament of tanks is determined mainly by the caliber of the artillery system and some numbers that determine its armor penetration (mostly theoretical). However, tank artillery systems deserve much closer attention, especially if they are domestically produced artillery systems. This publication was compiled by a man who, based on the anecdote of the same name about “thirty-eight parrots,” believes that the thesis “the main thing in a tank is the gun” is not without its logic . And offering to your attention a brief overview of domestic tank guns during the war, he hopes that there will be more fans in the circle of artillery lovers, but if this does not happen, the author will be pleased that he tried to have his say in the history of domestic tank artillery.