Fallout: New Vegas achievements

Fallout: New Vegas

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There are 75 Fallout: New Vegas achievements (50 without DLC) worth 2,819 (1,655)

162,083 tracked gamers have this game, 15,873 have completed it (9.79%)

Achievement Details

Mod Machine in Fallout: New Vegas

Mod Machine29 (15)

Install 20 weapon mods.

  • Unlocked by 42,153 tracked gamers (26% - TA Ratio = 1.96) 162,176  

Achievement Guide for Mod Machine

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Posted on 25 October 10 at 07:55, Edited on 23 June 11 at 01:01
This solution has 81 positive votes and 5 negative votes. Please log in to vote.
Weapon mods can be found at various vendors throughout the Wasteland, but the best place to go is "Gun Runners" near the New Vegas Strip. They usually have a lot of gun mods in their inventory under "Misc". You will need to have the gun you buy the mod for in order to install it. Note: Every vendors' inventory recycles over time, so there are more than enough opportunities to collect weapon mods. If, however, you want to get this done as fast as possible, there is a way to "force" a vendor to change to new mods. See the bottom of this solution for directions.

Here is the location of Gun Runners (JPEG):
External image

To install a mod, go to the Weapons section of your Pip Boy and scroll to the weapon you bought the mod for. Click the LB (Left Bumper) and a list will open up of available mods for that weapon. Just click A on the mod you want and the next time you take out your gun you will notice your shiny, new addition. These mods do not need to each be unique for the achievement. You can use duplicates of the same mods or on the same weapon.

Vendors' inventory changes every 72 hours or so, so press the Back button and wait for ~3 days and then check with the vendor again for new mods. You can also try the following:

(This was posted as a comment by "cradle crue")
if u buy somethin then save then dashboard then load game back up u have new items(mods) but it does not always work cause few time i loaded up my last been same items.
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