Borderlands 4 Zipper Review — Legendary Pistol
| Rarity | Legendary |
|---|---|
| Type | Pistol |
| Manufacturer | Daedalus |
| Drop source | Leader Willem, The Excrucible |
Red Text
Who's the shot caller now?
This review was machine-translated from the Japanese original. Numbers are checked against the original; if the wording reads oddly, the Japanese version is authoritative.
When you hit an enemy’s “back”, firepower spikes, a backshot‑specialized Legendary pistol. Made by Daedalus, it has the unique ability “Prison Rules” that grants +75% Critical Damage and +75% Damage when hitting the back. A technical gun that can explode in power with positioning.
🧩 Origin of the red text “Who’s the shot caller now?” The “shot caller” is prison slang referring to the leader/decision-maker of a group (Fandom/Mobalytics). It matches the unique ability name “Prison Rules” and the high‑damage backshot puts the enemy under control = you become the “shot caller”, a wordplay.
What kind of pistol? (Beginner’s perspective)
- Legendary Pistol (Daedalus-made). With the unique ability “Prison Rules”, when hitting an enemy’s back, Critical Damage +75% and Damage +75%
- Damage scales greatly when combined with back‑taking playstyle (flank / ambush from behind)
- Shooting only from the front provides no benefit = positioning makes the difference, a technical‑oriented gun
Unique Effect (Mechanics)
Prison Rules (Prison Rule): Hit the enemy’s back for Critical Damage +75% / Damage +75%.
- In‑game: Prison Rules — Gain +75% Critical Damage and +75% Damage when hitting a target in the back.
- Web (Lootlemon): Prison Rules — Gain +75% Critical Damage and +75% Damage when hitting a target in the back
- Maximum firepower when the opponent/situation allows back‑critical hits
- Weakness: Against front‑facing enemies or those you cannot get behind, the bonus does not apply, remaining a normal Legendary
Drop Farming
| Drop Source | Chance | Notes |
|---|---|---|
| Leader Willem (The Excrucible — Grindstone of the Worthy / Carcadia Burn, Kairos) | Approx. 9% | Exclusive drop |
- Leader Willem is the exclusive drop source for Zipper. Can be farmed repeatedly by resetting with Moxxi’s Encore Machine.
Build Compatibility
| Vault Hunter | Compatibility | Notes |
|---|---|---|
| Rafa | ⭐⭐⭐ | True value when you can get back‑critical shots |
| Vex | ⭐⭐⭐ | Good synergy with high‑fire‑rate / critical builds |
| Amon | ⭐⭐⭐ | General use |
| C4SH | ⭐⭐⭐ | General use |
Summary
- Back‑hit Critical Damage +75% and Damage +75% (Prison Rules) – a backshot‑specialized Legendary pistol
- Firepower can explode depending on positioning = technical‑oriented
- Obtained from Leader Willem (The Excrucible) exclusive drop – approx. 9%
- Element and detailed stats are (unverified)
Related
- Same category (pistols): Sunspot / Soul Survivor
- Reference: Lootlemon - Zipper / MentalMars - Zipper / Game8 - Zipper
FAQ
What is Zipper's unique effect?
Prison Rules: hitting enemies from behind grants +75% critical damage and +75% damage.
Where can I obtain Zipper?
It drops from Leader Willem in The Excrucible. Drop rate is approximately 9%.