X277 Viper Magnetic Rail Cannon
⚪ Last updated 2017⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 5.6% endorsement rate — high engagement, a strong quality signal
- 🏆 #301 of 313 Weapons mods in this game by downloads
📋 About This Mod
I was a bit disappointed when I first visited the Museum of Technology and found a display case named: X277 "Viper" Magnetic Rail Cannon. And after found out that there was no rail cannon. So I made one.
Adds the X277 Viper Magnetic Rail Cannon, a weapon inspired by a display case in the Museum of Technology. For Fallout 4 players who want a functional version of this lore-friendly weapon. Stands out as a community favorite with 286 endorsements and over 5,000 downloads.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Community-approved with 286 endorsements and over 5,000 downloads.
- Fills a lore gap by making a display case weapon actually usable.
- Simple concept that adds a unique weapon to the game.
⚠️ Cons
- Last updated in 2017, so it may have compatibility issues with newer game patches or DLC.
- No detailed description of stats, crafting, or location, so you'll have to discover those in-game.
- Potential conflicts with other weapon mods that alter leveled lists or the Museum of Technology area.
For Fallout 4 players who love lore-friendly weapons and want to grab a unique rail cannon from the Museum of Technology. If you're a completionist or collector of unique gear, this is a must-have. Skip if you want a fully documented mod with detailed stats and crafting recipes.
💡 Beginner Tips
- Use a mod manager like Nexus Mods Vortex to install and manage this mod easily.
- Check the mod's load order—place it after any major overhaul mods to avoid conflicts.
- Visit the Museum of Technology in-game to find the weapon; it's likely near the display case.
📊 Mod Details
- Game
- Fallout 3 Mods
- Author
- Za1zeR
- Version
- 1.1
- Downloads
- 5,141
- Endorsements
- 286
- Category
- Weapons
- Created
- 5/11/2017
- Updated
- 5/29/2017
🔧 How to Install Fallout 3 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 3 →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 3 commands, item IDs, and more.
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