This quick showcase video shows all animations and sounds of third new weapon Nail Gun special/SMG added to Call of Duty: Black Ops Cold War and Warzone in Season 4.
Multiplayer and Warzone unlock criteria: Using Special Weapons, Eliminate 5 enemies in 15 different completed matches.
Zombies unlock criteria: In Outbreak, get 25 Kills with Special Weapons in 12 different completed regions.
0:00 Nail Gun (Black Ops Cold War)
0:22 Nail Gun (Warzone)
0:56 End