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Here is a list of all the weapon types.
Click on the links to view the weapon parts and there effects.

Weapon Database

Alien Weapons
Assault Shotgun
Combat Rifle
Combat Shotgun
Grenade Launcher
Machine Pistol
Patrol SMG
Repeater Pistol
Revolver Pistol
Rocket Launcher
Semiautomatic Sniper Rifle
Sniper Rifles
Support Machinegun

Along with all of these, are custom item grades. Find them here.

If you want to contribute:
Please follow the established format. If you are adding mags, detail the mag size in the extra effects column. The simplest way to help is as follows:

•Pick a weapon type. The more of this type you have in your inventory, the easier this will be.
•Have the first weapon with no parts (invisible gun). This will be your control weapon, as it has base stats.
•Have the subsequent weapons have only one part. For instance, if you are testing barrels, have one with just barrel1, one with just barrel2, etc.
•Make sure that your weapons have the same material and the same quality grade.
•Calculate the percentage difference between the various stats to the control weapon. For instance, if control gun has 100 damage, and barrel1 gun has 125 damage, then barrel1 offers a +25% damage modifier. Round to the nearest 0.5%.
•Repeat until you get sick of it. Remember, every piece you test makes the job easier for everybody.

For ease of data entry of part names:


As part of an ongoing discussion on the Gearbox forums, we have discovered that in addition to white, green, blue, purple, light orange, orange, dark orange, and "pearl", the red medkit, the yellow from money, and cyan for upcoming DLC can indeed be put on weapons.

Examples of such are:


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