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DMZ CODEX · HAJIN EXCLUSION ZONE UPDATED 23 OCT 2026 DMZ EARLY ACCESS IS LIVE
DMZ reference artwork; operation destinations vary by deployment
Guide · Missions

MW4 DMZ Signal Breaker: bomb parts and planting walkthrough

Check the parts counter first, then the separate planting counter.

In short

Collect all three mission bomb parts, craft the bomb at the marked workbench and plant charges at three assigned targets. The collection and planting counters are separate. Wait for the operation-completion message after the final target.

  • Three parts before crafting
  • Three planting targets after crafting
  • Follow the current markers between stages

Signal Breaker has two different three-part checks. The first gathers the bomb components; the second counts the targets you plant on. Open the operation reference if you want the compact objective list.

Collect the three mission parts

Activate the operation available in your match, then follow its target-area and collection waypoints. The recorded route proceeds through Collect the Bomb Parts before Craft Bomb. Take each marked component and check the counter before leaving the search point.

A reported Imjin route includes a cache, a house and a guarded safe. Other completed runs use different areas. These are examples of containers to recognize, not a reason to search an unmarked building instead of your assigned destination. Reported route.

Your trackerNext action
Parts at 1/3 or 2/3Find the remaining collection marker and take the mission component
Parts complete, Craft Bomb activeFollow the workbench marker and finish its interaction
Plant Bomb activeMove to the first assigned target; the planting count starts separately

Craft at the mission workbench

Use the bench selected by the current operation. Ordinary metals and a visit to the FOB printer do not replace collecting the mission parts and completing the marked craft. The 3D Printer guide covers that separate equipment system.

Before starting the next stage, look at the destination and plan your approach. Keep enough ammunition and healing for the targets rather than spending everything on optional fights around the collection areas.

Plant at all three targets

Follow each target’s Plant Bomb prompt and confirm the counter advances. In the recorded gameplay, the tracker still shows 2/3 before the final target. Another nearby explosion or a completed Side Op does not replace that last plant.

Signal Breaker tracker showing Plant Bomb at 2/3 before the final target
Two plants complete; one target remains. .

Move clear of explosives and wait for the completion message. Then inspect the reward drop and plan your own extraction. A payout displayed in one recording is not a guaranteed result for every future run.

Open interactive Hajin map →

Use the map for terrain and reference locations. The current Tac-Map determines the parts, workbench and targets in your deployment.

Quick questions

Why is Signal Breaker still active at 2/3?

Check which counter is shown. Three collected parts unlock crafting; the later Plant Bomb counter requires all three targets.

Do I build the Signal Breaker bomb at the FOB?

Follow the operation’s marked workbench and Craft Bomb interaction in Hajin. It is separate from your equipment recipes at the FOB.

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