Soviet small arms before the Cold War focused largely on their capability to be mass-produced with few concerns about precision machining. However, this meant that the Red Army could field enormous armies from every corner of the world and in any corner of the world. Field manuals, spare parts and gunsmiths with experience in these weapons are very easy to find.
EFFECT:
When performing any skill check regarding production, modification, repair or maintenance of this weapon, add an Easy DM.