Building a weapon part-by-part in Gibbed is the most powerful thing the editor does — and the easiest way to make a gun that silently disappears the moment you load the game. The trick isn't the building; it's understanding which combinations the game will actually accept. Get that, and your custom rolls survive. Ignore it, and you'll keep wondering where your masterpiece went.
- A weapon is parts (body, barrel, grip, sight, accessory, element, material) + a manufacturer.
- Illegitimate combos and parts from DLC you don't own get deleted on load.
- For reliable results, start from a working item/code and tweak it — don't assemble alien combos from scratch.
What a weapon is actually made of
Every gun in Borderlands 2 is a stack of parts, and Gibbed exposes all of them: the body, barrel, grip, sight or scope, accessory, the element, and the material (which sets the visual skin and brand). Swap a part and you change a stat or behavior. The catch is that the game expects those parts to belong together — they're not free-mix LEGO.
What the manufacturer decides
The manufacturer is the biggest single lever — it sets the whole feel of the gun. Quick reference:
| Manufacturer | Signature behavior |
|---|---|
| Bandit | Large magazines, rough accuracy |
| Dahl | Burst fire when aiming |
| Hyperion | Accuracy improves as you fire (reverse recoil) |
| Jakobs | High damage, fires as fast as you click |
| Maliwan | Strong elemental effects |
| Tediore | Reload by throwing the gun like a grenade |
| Torgue | Explosive gyrojet rounds |
| Vladof | Very high fire rate |
Mixing a manufacturer's body with another's incompatible parts is one of the fast routes to a gun that won't load.
Why your custom gun vanishes
It comes down to three things, and they're all the game protecting itself from an item that "can't exist":
- Incompatible parts. You can't bolt rocket-launcher parts onto an SMG, or a launcher scope onto a pistol. If the combination isn't a legitimate weapon, the game refuses it and it never shows up in your inventory.
- Parts from DLC you don't own. If your game doesn't have the files for a part — because it's from a DLC you haven't installed, or needs a community patch — the game can't reconstruct the gun and deletes it on load.
- Set ID mismatch. See below — this is the subtle one.
This is the sanity check again, just at the part level: the game only keeps items it considers legitimate. The reverted-edits page covers the broader version of this behavior.
The Set ID trap (DLC gear)
Here's the one that catches experienced editors. DLC weapons carry a different Set ID than base-game weapons, and Gibbed can't change the Set ID. So you cannot take a base-game gun and "convert" it into a DLC weapon by swapping parts — the Set ID won't match and the game tosses it. The workaround: start from a code or item that's already the DLC weapon (correct Set ID), then modify its other parts from there.
Rules for guns that actually survive
Start from something that works
Paste a known-good code or copy an existing gun, then tweak it. You inherit a valid Set ID and a legitimate base.
Stay within one weapon type
Keep parts to the same class of gun and a compatible manufacturer. Don't cross launcher parts into pistols.
Only use parts you own
No DLC parts if you don't have the DLC; no community-patch parts without the patch installed.
Test before you commit
Save, load the game, check the gun's actually there and equips before you build a whole loadout this way.
Custom items can shed bonus stats after being stored and pulled back out of the Bank. If a hand-built gun "weakens" after a bank trip, that's this — keep prized custom rolls in your backpack.
The easier path (for most people)
Honestly? Unless you're chasing one specific roll, don't build from scratch. Pasting a finished code gives you a guaranteed-legitimate item every time, with none of this risk. Part-by-part building is a power-user tool — worth knowing, not worth fighting if you just want good gear. The weapon codes page is the low-effort route.
Quick answers
Why does my built weapon disappear when I load the game?
Can I turn a base-game gun into a DLC weapon?
My custom gun lost stats after the bank.
The Se7enSins "Learn BL2 Modding in 15 mins" weapons/class-mods guide, the MPGH "why can't I make some weapons" thread (incompatible parts / Set IDs), and the BLCMods wiki on item and weapon part definitions. Checked June 2026.