The Scale Camouflage is a weapon camouflage skin featured in Call of Duty: Ghosts. This camouflage is unlocked in various ways.
Assault rifles, Light machine guns, Marksman rifles, Sniper Rifles: Get 50 kills with the desired weapon while leaning.
Submachine guns: Get 25 kills with the desired weapon while leaning.
Shotguns: Get 40 Head Shot kills with the desired weapon.
Riot Shield: Get 25 kills with the weapon and no perks equipped.