The Gunsmith is where Modern Warfare 4 DMZ turns your cash and your weapon manuals into actual guns. It unlocks at DMZ Player Level 10, and from then on you can buy any base weapon whose manual you have extracted, then pay DMZ Cash to add attachment slots and build it up. Unlike multiplayer, there is no instant free loadout here; the Gunsmith runs on money.
This guide covers how to unlock the Gunsmith, how buying a base weapon works, how attachment slots are priced, and how it all connects to the manual system and your looted weapons. If you want the unlock side in detail, pair this with our weapon manuals explained guide.
Unlocking the Gunsmith
The Gunsmith is a FOB facility gated behind the DMZ Player Level, which is its own 1-70 track separate from the 1-55 Player Level. The FOB opens its stations as you climb: the 3D Printer at Level 2, the Vendor at Level 5, the Gunsmith at Level 10 and the Dog Tag Case at Level 20. So your first job in DMZ is simply to deploy, loot, extract and level up until the Gunsmith is available.
Because DMZ XP also counts toward the 1-55 Player Level, leveling the mode is never wasted even before the Gunsmith opens. For the full FOB progression, see our FOB guide.
Buying a base weapon
Once the Gunsmith is open, buying a weapon requires one thing first: you must have found and extracted that weapon's Weapon Manual. After that, the base gun is purchasable with DMZ Cash any time you deploy. Base weapons are cheap to buy, for example around 5,000 cash for an M4, which is low enough that rebuying after a lost run is routine rather than painful.
This is the core loop of DMZ weapon ownership: a manual gives you the permanent right to buy, and cash pays for each copy. If you lose the gun on a run, you simply buy another. For how manuals unlock this, read how to unlock weapons. If you would rather have the manuals handled so every weapon is buyable, there is a weapon manuals service for that.
Paying for attachment slots
A base weapon is just that, a base. Building it up at the Gunsmith means buying attachment slots one at a time with cash, and each slot tends to cost more than the last. Pricier attachments like suppressors, drum mags and thermal or long-range optics cost more than basic ones. A fully kitted weapon is therefore a meaningful cash investment, not a free configuration.
That pricing structure means you should build for purpose. A close-range SMG does not need a long-range optic, and spending cash on slots you will not use is wasted money. Decide the gun's role, then buy only the slots that serve it.
| Step | Requirement | Cost |
|---|---|---|
| Unlock Gunsmith | DMZ Player Level 10 | Leveling only |
| Make a weapon buyable | Extract its Weapon Manual | Earns 5,000 cash |
| Buy base weapon | Manual extracted, Gunsmith open | Low (e.g. ~5,000) |
| Add attachment slot | Weapon owned | Rising per slot |
| Premium attachments | Slot available | Higher (optics, suppressors) |
Gunsmith builds vs looted weapons
There is an important ceiling difference. Weapons you loot in the field can carry up to eight attachment slots, while a Gunsmith build is capped lower. That means a well-equipped rival or boss weapon can be more heavily attached than anything you build yourself, which is why extracting contraband guns is worthwhile. Our contraband vs insured guide covers that trade-off.
The practical approach is to use Gunsmith builds as your dependable, rebuyable workhorses and treat a strong looted weapon as a bonus for the run you found it on. One is reliable, the other is powerful but temporary.
FOB discounts and smart spending
Over time, FOB upgrades can grant Gunsmith discounts, lowering what every weapon and slot costs. Funded by cash and valuables like Gold Bars, these discounts pay off across dozens of purchases, so investing in them mid-game quietly reduces your running costs. It is one of the better uses of cash once your weapons are sorted, as covered in what to spend DMZ cash on.
Put together, the Gunsmith rewards a plan: reach Level 10, extract manuals for the weapons you want, buy and build those weapons for their roles, and invest in discounts so the whole loop gets cheaper. Do that and you will always deploy armed, no matter how a previous run ended.
Building for a role
Because every attachment slot costs cash, the Gunsmith rewards building with intent rather than throwing money at a gun. Decide the weapon's job before you spend. A close-quarters SMG wants slots that improve handling, mobility and hip-fire so it wins the fast fights inside Hajin's buildings; spending on a long-range optic there is wasted cash. An assault rifle meant as your all-round daily driver benefits from a balance of recoil control and range, since it has to handle both mid-range duels and the occasional longer poke. A marksman or sniper build leans into magnification and bullet velocity, and a launcher needs almost nothing beyond the base to do its job against vehicles.
The slot-by-slot pricing, where each slot tends to cost more than the last, means the final one or two slots on any gun are the most expensive. Ask whether that last premium slot genuinely changes how the weapon plays or whether the cash is better saved for a second weapon or a FOB discount. A lean, purpose-built gun that costs less and does its one job well will usually serve you better across many runs than one over-invested weapon you are then afraid to lose. Keep your builds matched to the roles in our best weapons to extract guide and you will rarely deploy under-equipped.
Managing cash at the Gunsmith
The Gunsmith is a recurring expense, not a one-time setup, and treating it that way keeps you from going broke. Every time you lose a weapon on a run you rebuy the base and its slots, so your effective cost per deployment is however much your loadout costs to replace. A lean, purpose-built gun that you can rebuild for a few thousand cash is sustainable run after run; an over-invested weapon stacked with premium slots is expensive to replace and tempts you to play too cautiously to protect it. The goal is a loadout you can afford to lose, because in DMZ you eventually will.
This is where FOB discounts become the quiet hero of your economy. Funded by cash and valuables like Gold Bars and Gold Skulls, a Gunsmith discount lowers the cost of every weapon and every attachment slot you buy from then on. Across the dozens of rebuilds a regular player makes, that saving dwarfs its upfront cost, which is why investing in it mid-game frees up cash for bigger goals later. A practical rhythm is to settle on one or two core builds, learn exactly what they cost to replace, keep that much cash spare at all times, and funnel the rest toward discounts first and Operator Prestige second. Manage the Gunsmith as an ongoing budget line rather than a shopping spree and you will always redeploy armed without starving your long-term savings.
Frequently Asked Questions
When does the Gunsmith unlock in MW4 DMZ?
At DMZ Player Level 10. The FOB opens the 3D Printer at Level 2, the Vendor at Level 5, the Gunsmith at Level 10 and the Dog Tag Case at Level 20.
Why can't I buy a weapon at the Gunsmith?
You need to find and extract that weapon's Weapon Manual first. Until the manual is secured, the base weapon is not available to purchase even with the Gunsmith open.
How much does a weapon cost?
Base weapons are cheap, for example around 5,000 cash for an M4. Attachment slots are bought individually and each tends to cost more than the previous one.
Are Gunsmith builds as strong as looted guns?
Looted weapons can carry up to eight attachment slots, more than a Gunsmith build's cap. A Gunsmith gun is reliable and rebuyable; a strong looted gun is more powerful but temporary.
Do I lose my Gunsmith weapon when I die?
You lose the copy you took in, but not the ability to buy it again. Because the manual unlock is permanent, you just rebuy the base weapon with cash on your next deployment.
Can I make the Gunsmith cheaper?
Yes. FOB upgrades funded by cash and valuables can grant Gunsmith discounts that lower weapon and attachment costs, which pays off across many purchases.