M20A1 Whalegun Anti-Tank Rifle (Beyond Citadel)
🟡 Updated this year⚠️ Install Order · 2 steps
1🛠️ F4SE — Fallout 4 Script Extender Download ↗
2🔧 UFO4P — Unofficial Fallout 4 Patch Download ↗
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 0.4% endorsement rate
- 🏆 #2 of 385 Weapons mods in this game by downloads
📋 About This Mod
Bitches love Cannons!
🤖 AI-enhanced — based on mod data
Adds the M20A1 Whalegun, a powerful anti-tank rifle from Beyond Citadel, to the game. With 588 endorsements and nearly 140k downloads, this weapon mod has proven popular. It's a straightforward addition for players who want a heavy-hitting cannon.
✨ Key Features
Adds the M20A1 Whalegun anti-tank rifle from Beyond Citadel.
High community approval with 588 endorsements.
Nearly 140,000 downloads indicate widespread use.
📊 Pros & Cons
✅ Pros
- Community-approved with 588 endorsements and nearly 140k downloads—clearly a fan favorite.
- Adds a unique anti-tank rifle that brings heavy firepower to your arsenal.
- Simple weapon mod—no complex systems to learn, just point and shoot.
⚠️ Cons
- No detailed description provided—what you see is what you get, so don't expect extra features.
- Last updated in January 2026—might not be compatible with future game patches.
- Only adds one weapon, so if you're looking for a full arsenal, this won't satisfy.
🎯 Is This For You?
For players who want a powerful, meme-worthy anti-tank rifle to blast through enemies. If you're a fan of Beyond Citadel or just love big guns, this is for you. Skip if you want a comprehensive weapon pack or need detailed documentation.
For players who want a powerful, meme-worthy anti-tank rifle to blast through enemies. If you're a fan of Beyond Citadel or just love big guns, this is for you. Skip if you want a comprehensive weapon pack or need detailed documentation.
📦 Install:Easy· Under 1 minute
💡 Beginner Tips
- Check if the mod requires any specific game version or DLC—since the description is minimal, verify compatibility before installing.
- If you're using a mod manager, let it handle the installation to avoid manual errors.
- Test the weapon in a safe area first to get a feel for its recoil and damage.
📊 Mod Details
- Game
- Fallout 4 Mods
- Author
- The6thMessenger
- Version
- 1.05.4
- Downloads
- 139,926
- Endorsements
- 588
- Category
- Weapons
- Created
- 2/15/2025
- Updated
- 1/4/2026
🔧 How to Install Fallout 4 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 4 →
Visit the official mod page for specific installation instructions for this mod.
🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 4 commands, item IDs, and more.
Keep browsing — more Fallout 4 mods await