Can someone help me. I am unable to use the mod button on Fallout NV I have a non GRA mod and non GRA 357 magnum but whenever I use the X button nothing happens also it's not faded

  • I know of a repair button, but "mod"?
    – Nolonar
    Oct 12, 2015 at 20:44
  • yeah there's a mod button
    – user127062
    Oct 12, 2015 at 20:46
  • @Nolonar It does exist. You press x to mod your weapon by adding scopes, focus enhancers or other improved weapon parts
    – imulsion
    Oct 12, 2015 at 20:46
  • lb (xbox) x (pc)
    – user127062
    Oct 12, 2015 at 20:46
  • Time to revisit NV, then ;)
    – Nolonar
    Oct 12, 2015 at 20:52

3 Answers 3


Here's the revolver in question:

Fallout 357 revolver

The Mod button is highlighted in the top right. When you press X the below menu should appear (forgive me for having only one mod, couldn't find another one).

Mod menu

When you click on a mod, it will be attached to a weapon (it will be noted with a "+" next to its name, and the attached mod will be listed in weapon's properties panel:

Weapon with mod

Make sure you have appropriate mod for a weapon - it's usually obvious from a mod's name which weapon it's for. Also, since you tagged this question as "pc", I assume you're pressing X on keyboard and not on a gamepad.


I don't remember having to use the keyboard (maybe that's the problem; you can't), click on it with the mouse instead. Same goes for if you have a controller: try the mouse. Also, some guns will only take certain mods, and it's either a bug or something, that keeps mod lit up even though the mod won't go on it, as I've had that happen to me, too. I do however have a bunch of mod files installed, including Fallout3, in its entirety.

There's only two mods for the 357 (falloutwikia):

  • .357 magnum revolver long barrel - increases the weapon's damage by 3.
  • .357 revolver heavy duty cylinder - increases the weapon's durability by 50%.

For GRA Merged: (nexusmods.com)

All weapons have had their tags (GRA, Mad Bomber, etc) removed, and vanilla versions of weapons use the GRA weapon mods instead.

  • I have tried but whenever I try to go to the (X) mod button it deselects the weapon
    – user127062
    Oct 13, 2015 at 17:29
  • @user127062 Sounds like a mod conflict, or you have GRA Merged installed, see edit.
    – Mazura
    Oct 13, 2015 at 20:50
  • I will take a look
    – user127062
    Oct 14, 2015 at 21:15

It's Page Up. After a firm hand on the keyboard and swiping left and right, finally figured it out.

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