Callahan Fullbore Autolock - Vera

This mod needs NVSE

DESCRIPTION: Like something straight out of science fiction, this gun will let you fire every type of bullet ammunition in the game from a single, compact platform. The Callahan Fullbore Autolock is an experimental weapon developed at the Black Mountain Research Facility. In times past, it was 'rescued' from said facility, and has had many owners since. The most recent owner, a man they call Jayne, ran into some tough times (he's dead), and now the gun is looking for a new owner. The previous owner was heard saying something about "being in his bunk" and "You can't stop the signal", before he headed off.

Features of the Callahan Fullbore Autolock:

• []Fire all powder based pistol and rifle ammunition[]Hotkey based caliber swapping (default Y)[]HUD display for the current ammunition[]Smart ammo selection, will select the next/first available ammo when switching/equipping[]Built in support for iHUD/oHUD[]Two models to chose from. The Firefly classic Vera model, and the alternate Fallout style model

Additionally, the mod is now compatible with both Pelinor's and jazzisparis' selective fire mods.

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DETAILS: The Callahan Fullbore Autolock is a heavily scripted weapon that relies on NVSE and Selective Fire. It allows you to carry one gun to fire all types of bullets. Ammo switching is done by tapping the Y key. There will be a very slight delay, to allow you to quickly cycle through ammo without the character constantly reloading the gun.

Damage and weapon stats are changed for each caliber. The changes should be affected by your skills and perks instantly. Damage is set as a static value which again, should scale with your perks etc. The damage value was decided by taking the unique version of a weapon from each caliber (if there is a unique weapon), and adding a bit more damage about equivalent to the unique over the normal. Where a unique didn't exist, the same method was used to get the damage value over the normal weapon.

If you have no ammo that the weapon can fire, then the HUD element will display a NONE value.

This gun is heavy. This is to compensate for how over powered it can become with perks and high power ammo. There are is a weapon mod available for this weapon, a scope, making this a viable mid-range sniping weapon. It also has built in checks to let you know if you are missing the HUD elements, and if you don't have NVSE.

For the exact location, check out the optional download file.

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INSTALLATION: [*]Make sure you meet the Requirements (listed below).

🤖 AI-enhanced — based on mod data

Callahan Fullbore Autolock - Vera is a custom weapon mod for Fallout: New Vegas that fires all powder-based pistol and rifle ammunition, featuring a HUD display for current ammo type and a hotkey for seamless ammo swapping. With 351 endorsements and 7,387 downloads, it's a niche but appreciated addition for players seeking versatile firearms.

✨ Key Features

Fires all powder-based pistol and rifle ammunition

HUD display shows current ammunition type

Hotkey for seamless ammo swapping

📊 Pros & Cons

✅ Pros

• Versatile ammo compatibility—one gun for all powder rounds
• HUD display keeps you informed without opening menus
• Community-tested with 351 endorsements and 7,387 downloads

⚠️ Cons

• Last updated in 2013—may have compatibility issues with modern mod setups
• Requires manual integration with hotkey system; may conflict with other hotkey mods

🎯 Is This For You?
For Fallout: New Vegas players who want a versatile sidearm that handles multiple ammo types without constant weapon switching. Ideal for survivalists and role-players who value convenience. Skip if you prefer lore-friendly or realistic weapons—this is a unique, gamey addition.

📦 Install:Medium· 5-10 minutes

💡 Beginner Tips

• Set the ammo swap hotkey in your controls to avoid conflicts with other keybinds.
• Test the weapon with different ammo types in a safe area to see the HUD update in real time.
• If using a mod manager, ensure the mod loads after any UI overhauls to avoid HUD conflicts.