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The subject of this article appears in Call of Duty: Black Ops Cold War The subject of this article appeared in Zombies mode
"Extended barrel with polygonal rifling to improve bullet velocity and damage."
Gunsmith description


The Sigma Special barrel is a unique attachment available for the ZRG 20mm in Call of Duty: Black Ops Cold War. It gives increased damage and bullet velocity while decreasing rechamber time.

Effects

Weapon Length Unlock Level Stats
ZRG 20mm 42.7" Weapon Level 48 + 33% Damage
+ 19% Bullet Velocity
- 19% Fire Rate
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