This is the gun brought into space. Soviet cosmonauts went armed into space, just in case they landed in unfriendly territory, or any other threat that may happen when they land. It had three barrels, the top two which fired approximately 40 gauge shotgun rounds. The lower barrel was chambered for a 5.45x39mm rifle round.
Oh and the stock was also had double usage as a machete.
It was used until 2006, when it was replaced with a semi-automatic handgun.