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If you've spent any time scavenging the wasteland in Fallout 76, you know how quickly your stash box fills up. Between junk, gear, and ammo, it's easy to get overwhelmed. But here’s a little secret savvy players already know: some ammo types are worth serious Caps, and they sell surprisingly well both to NPC vendors and fellow players.

In this guide, we’ll break down 16 types of ammunition that consistently bring in high profits. Whether you're looking to make room in your stash or fund your next big purchase, these ammo types can turn your surplus into a stream of steady income.

1. Ultracite Ammo (All Types)

Ultracite ammo—especially Ultracite .45 and Ultracite .50 cal—is in high demand due to its superior damage against Scorched and Scorchbeasts. It's a must-have for high-level players running daily ops or endgame events. If you're sitting on extra Ultracite ammo, it’s a reliable seller.

2. .50 Caliber

This heavy-hitting round is favored by Bloodied builds and heavy gunners alike. With the popularity of the .50 cal machine gun, this ammo sells out quickly in player vending machines.

3. .45 Round

Used in a wide range of weapons, from combat rifles to submachine guns, .45 rounds are a staple. They're easy to craft in bulk and perfect for flipping at a profit.

4. Plasma Cartridges

With energy weapons gaining popularity—especially Plasma Rifles with the right legendary mods—Plasma Cartridges have become a top-tier ammo type to sell.

5. 5mm Rounds

These are used by Miniguns, which are common among Power Armor builds. Players who run events like Radiation Rumble often burn through these by the hundreds.

6. 5.56 Rounds

With guns like the Handmade Rifle being a fan favorite in both PvE and PvP, 5.56 rounds never stay in vending machines for long. Stocking these is a surefire way to earn fast Caps.

7. .308 Round

Sniper builds and Hunting Rifles thrive on .308 rounds. Because these aren’t as common in loot drops, many players prefer to buy them rather than farm.

8. Fusion Cells

Perfect for laser weapons, Fusion Cells cater to energy weapon builds. They're especially useful for low weight builds, making them highly desirable.

9. Fusion Cores

While technically not "ammo," Fusion Cores are a hot commodity for Power Armor users. Fully charged cores can go for big Caps, especially in bulk.

10. Cryo Cells

Cryo weapons might be niche, but players who specialize in them often seek Cryo Cells in large quantities. The rarity makes them valuable.

11. Mini Nukes

These are heavy and not frequently used, but collectors and explosive build users will pay well. Selling them in small quantities can yield high returns.

12. Missiles

With the rise in popularity of explosive weapons, missiles have seen renewed demand. Especially during nuke events, players with missile launchers burn through stockpiles fast.

13. .38 Round

These are incredibly common, but because they're used by automatic pipe rifles and low-level builds, newer players often buy them in bulk. Great for beginner sellers.

14. Arrows

With the popularity of stealth builds using the Bow or Compound Bow, arrows are a lightweight and consistently in-demand ammo type.

15. Crossbow Bolts

Although more niche than arrows, Crossbow Bolts have their own small, loyal buyer base. If you’re crafting them, try selling in small stacks.

16. Gamma Rounds

Used for Gamma Guns, which deal radiation damage, these rounds are rare and can fetch a decent price from players running niche builds or certain Daily Ops.

Pro Tip for Sellers

If you're serious about Caps farming, remember to check which ammo types are in short supply during current events or after updates. Prices fluctuate with the meta, so stay informed. And if you're looking to expand your trade, it helps to keep your vending machine stocked and your C.A.M.P. easily accessible.

Some veteran players even use profits from ammo sales to buy Fallout 76 Items or rare plans from other traders. A few savvy wastelanders also turn to the best site to buy Fallout 76 Caps when they want a fast start—and many of them recommend U4GM for fair prices and quick delivery.

So next time you’re drowning in extra rounds, don’t scrap them. Check their market value. You might be sitting on a goldmine of ammo that could turn into the Caps you need for that dream build.