Suomi M-31
⚪ Last updated 2014⚠️ Install Order · 5 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 3.9% endorsement rate — high engagement, a strong quality signal
- 🏆 #195 of 220 Weapons mods in this game by downloads
📋 About This Mod
+++DESCRIPTION+++
This mod adds in a Suomi KP/-31 into the game along with three modifications - a drum magazine, snow camouflage, and a muzzle break. It comes with unique static and sound entries (with custom sounds as well!), as well as having it added to the appropriate weapon, repair, vendor, and leveled lists. A "korsu" variant has also been added, but it can not use the muzzle break modification.
A placeholder icons have been made for potential custom icons by T3T if he makes some that can be easily replaced later on.
It can be found by Doc Mitchell's bookshelf in his bedroom.
+++COMPATIBILITY+++
This mod should not conflict with any other mod.
+++KNOWN ISSUES+++
None known.
+++INSTALLATION+++
Copy/extract the archive into your Data folder and check the esp off in your data loader.
+++UNINSTALLATION+++
Remove the contents of the archive from your Data folder.
+++Credits+++
RedRogueXIII for creating the model Millenia for creating the textures/modifying the model for the "korsu" variant RedRogueXIII for creating the sounds T3T for the custom icons Naky for screwing up everything else
+++License+++
Do not edit or redistribute without explicit permission from RedRogueXIII and Millenia.
A professional quality Suomi M/31 submachine gun mod for Fallout: New Vegas, featuring 3 in-game mods, a sawn-off tank/bunker variant, custom sounds, and leveled list integration. With nearly 3,000 endorsements and 75,000 downloads, it's a well-received weapon addition for players seeking authentic historical firearms.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Community favorite with 2,937 endorsements and 75,514 downloads — clearly a well-loved weapon mod.
- Professional quality from Millenia, a known name in Fallout modding, so you know the mesh and textures are top-notch.
- Custom sounds and leveled list integration make it feel like a native part of the wasteland.
⚠️ Cons
- Last updated in 2014 — might have compatibility issues with newer mods or game patches, though FNV is stable.
- Only one weapon variant (sawn-off) — if you wanted more customization options, this might feel limited.
For Fallout: New Vegas players who want a historically accurate and well-crafted submachine gun to add variety to their arsenal. If you're a collector of Millenia's weapon mods or just love classic firearms, this is a must-have. Skip if you're looking for gameplay-changing mechanics — this is purely a weapon addition.
💡 Beginner Tips
- Since it integrates with leveled lists, you'll find the Suomi on enemies and in loot as you explore — no need to console command it in.
- If you're using a mod manager like NMM or Vortex, just download and activate; it's a simple install with no dependencies.
- Check your load order if you have other weapon mods that alter leveled lists — this one should be compatible, but keeping it sorted helps.
📊 Mod Details
- Game
- New Vegas Mods
- Author
- Millenia - RedRogueXIII - Naky
- Version
- 1.0
- Downloads
- 75,514
- Endorsements
- 2,937
- Category
- Weapons
- Created
- 12/21/2014
- Updated
- 12/30/2014
🔧 How to Install New Vegas Mods
Download from Nexus.
📖 Full step-by-step install guide for New Vegas →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for New Vegas commands, item IDs, and more.
Keep browsing — more New Vegas mods await