Which cases drop the Butterfly Knife?
The Butterfly Knife drops from the Operation Breakout Weapon Case as a rare special item. In each case, any knife is 0.26% per opening and this exact item is about 1 in 5,000, assuming every rare special item is equally likely.
| Case | Weekly drop pool | Chance per opening | Case price |
|---|---|---|---|
| Operation Breakout Weapon Case | No longer drops | 0.02% · 1 in 5,000 | — |
About the Butterfly Knife
The ★ Butterfly Knife was added in July 2014.
“This is a custom-designed balisong, commonly known as a butterfly knife. The defining characteristic of this weapon is the fan-like opening of a freely pivoting blade, allowing rapid deployment or concealment. As a result, butterfly knives are outlawed in many countries.”




