Dnipro

Laying near a safe at the top of the cooling tower. To reach it, climb the ladders on the tower’s southern edge to reach a teleportation anomaly.

At the end of the Lishchyna Facility. To reach it, you’ll need a Key from the bunker outside; this will open the front door. Fight your way through the zombies, press a button at the top of a ladder to open another door, and the gun will be in a room at the end of the corridor. Video guide here.

Found deep in the underground base, on the table in an armory you’ll enter soon after navigating an anomaly-filled storage room. Can only be accessed during a late-game story mission.

After an elevator ride and long fight through corridors filled with exoskeleton-wearing enemies, you’ll find a supply room behind two heavy doors. Two Dnipro guns will be on the shelf inside, complete with Assault Rifle Suppressors and Open Collimator Sights. Only accessible during a late-game story mission.