How to Get the 3.5-Plate Armor Vest in MW4 DMZ

The 3.5-Plate Armor Vest is an Ultra-rarity carrier available through the X01 3D Printer in Modern Warfare 4 DMZ. Unlike standard armor recipes at the Forward Operating Base, this one requires a dedicated trip into the GRANIT Arms facility beneath Hajin. Its special plate capacity makes it worth preparing for, but you need to collect three specific ingredients before the printer can produce it.

Season 1 introduced X01 on November 6, 2026, and the vest remains tied to the facility’s Production Assembly printer. Players collecting MW4 DMZ Items should prioritize the Specter Fabric Sample first, as it is the ingredient most likely to determine whether the craft can go ahead.

Required Materials and Where to Find Them

The X01 printer requires the following ingredients for one 3.5-Plate Armor Vest:

There is no additional DMZ Cash fee listed for this recipe. You must have all three ingredients in your backpack before starting the print. Other fabric types or materials stored at the FOB cannot replace missing ingredients.

Specter Fabric Sample

This is the most important ingredient to secure before entering the printer room. It is an X01 crafting material also required for Argonaut Armor, another Ultra item made at the same facility. Argonaut Armor is a Fire Support item and consumes one Specter Fabric Sample, two Alloyed Plating, and five High-Tenacity Fibers.

The sample is reported among the Captain’s loot, but the drop is not guaranteed. If you only have one, decide which item you want to craft first. Spending it on Argonaut Armor means you will need another sample before printing the 3.5-Plate Armor Vest.

Power Regulators

You need two Power Regulators. Search the Haneul Nuclear Reactor and nearby electrical substations for them. Radiation protection is important when entering the reactor area.

There is another way to reduce your looting requirements. Once Epic Ingredient Printing is unlocked, the FOB printer can produce a Power Regulator using 100 Electronics and three Printed Circuit Boards. This helps cover part of the material cost, although it does not unlock the 3.5-Plate Armor Vest recipe at the FOB.

Structural Alloy

Five Structural Alloy pieces are required, making this the largest quantity in the recipe. Check the hangar and repair bay at Chang-san Air Base, then continue searching Bubun Yard if you still need more.

You can also check the Ingredient Locations hint in the recipe menu when available. This provides the location marker currently used by the game client and can help narrow down your search.

How to Enter X01

There are two ways to reach the facility.

Since November 7, 2026, the most direct option has been the FOB deployment menu. Select X01 and choose Free Roam to load directly into the facility without first traveling through Hajin.

Alternatively, enter X01 during a regular Hajin deployment:

• Travel to the northwestern corner of Hajin at grid B0.
• Locate the abandoned elevator shaft near the facility.
• Approach the barred gate and activate the red ENGAGE button when the Open Door prompt appears.
• Follow the corridor to the freight elevator.
• Hold the Enter X01 prompt, then confirm the travel request.

The confirmation sequence takes approximately 30 seconds, followed by a loading period that can last up to around two minutes. The elevator carries everyone standing inside its cage when it departs. Operators who remain outside are left behind.

Neither the gate nor the elevator requires a key, keycard, or DMZ Cash payment.

Find the Production Assembly 3D Printer

After entering X01, open the Tac-Map and switch to the Data Center floor. The Production Assembly area is located near the center of the floor at grid E5.

Move to the western side of Production Assembly and find the ladder leading toward the stairs in the northern section. Follow the stairs to a small mezzanine office, where the printer cabinet displays the Print Item interaction.

Be careful when approaching this room. AI patrols move through the facility, and other Operators may also target the office because printed equipment consumes materials carried in backpacks.

There is an additional progression benefit to visiting the printer. Opening its menu completes the Crafting Material task on the second page of X01 Orders. You do not need to spend ingredients or successfully craft an item for this task to count, so even an incomplete material run can contribute to Order progress.

What Makes the 3.5-Plate Vest Different?

The main advantage is its four-slot armor capacity. The item description identifies it as an extremely durable carrier that can hold four regular Armor Plates, with the third plate counting as 1.5 plates.

This does not mean the vest automatically comes with four plates after printing. You still need to equip the carrier and insert your own Armor Plates. Once equipped, fill all four available slots to make full use of its capacity.

3.5-Plate vs. Regular FOB Armor Recipes

The X01 recipe should not be confused with the standard carrier options available through the FOB printer.

The regular 3-Plate Armor Vest is unlocked through the relevant DMZ Orders and uses two Ballistic Fabric, five Nylon Cloth, and ten Reactive Metals. It holds three full plates and can be printed without entering X01.

The Tempered Armor Vest is also available through the FOB printer after extracting its recipe during a deployment. Its requirements are two Military Composites, four Ballistic Fabric, and ten Rigid Synthetics. This Ultra carrier uses enhanced plates and belongs to the regular FOB crafting progression.

The 3.5-Plate Armor Vest is different: its Specter Fabric Sample, Power Regulators, and Structural Alloy recipe is exclusive to the X01 printer. Unlocking other carrier recipes at the FOB will not make this one appear there.

Season 1 also addressed an armor-swap issue in which changing from a higher-rarity carrier to a lower-rarity one could remove equipped plates. With that issue patched, switching between the 3.5-Plate, 3-Plate, and Tempered carriers should no longer cause those plates to disappear.

Print the Vest and Plan Your Extraction

At the Production Assembly cabinet, select Print Item and choose the 3.5-Plate Armor Vest. Check that the displayed requirements match one Specter Fabric Sample, two Power Regulators, and five Structural Alloy. After printing, collect the finished carrier, equip it, and insert your plates before leaving the room.

Do not spend too long inside X01. Regular exits close as toxic gas spreads, and the Toxic Gas Spreading In countdown begins at 20 minutes. If your intended exit is no longer available, the X01 printer offers another option: a Staff Emergency Exfil Keycard.

Its recipe requires two CPUs, four Printed Circuit Boards, and eight Control Units. The card opens Emergency Egress Shafts marked on the Tac-Map, providing an alternative way out of the facility. Keep these materials available if you expect to need an emergency exit rather than spending them on other crafts.

Players considering MW4 Bot Lobbies as a progression option should still pay attention to the specific requirements of this X01 objective. The vest depends on collecting its exact ingredients, reaching the correct printer, and extracting successfully with the finished equipment.

The most efficient preparation is to secure the Specter Fabric Sample first, gather the remaining materials, and enter X01 with a clear crafting and extraction plan. Since every additional vest requires another Specter Fabric Sample, avoid spending this rare ingredient on Argonaut Armor unless that is your intended priority.

The U4GM Team