Amplification Module MK. IV drops exclusively from breach containers aboard the airborne ARC Frigate and inside the Fallen Emperor dungeon. You need this exact component to unlock Tier V Amplification on Epic-rarity weapons—specifically the Bettina and Hullcracker—at a Level 4 Gunsmith station.

Where to Farm Amplification Module MK. IV (Frigate vs. Emperor)

Choosing between the two drop locations comes down to your squad size and whether you have crafted an Emperor Gateway Conduit key. Neither activity guarantees a Mk. IV drop, as containers roll across all five Mark tiers (Mk. I through Mk. V).

Run the ARC Frigate if you lack an Emperor key or play solo; run the Fallen Emperor if your trio wants uncontested loot panels behind a key gate.

ARC Frigate Farming Route: Solo Lower Deck vs. Squad Cargo Push

The ARC Frigate is a rotating Map Condition rather than a static point of interest. Always verify that the ARC Frigate icon is active on your Map Selection screen before deploying, and spawn in with a heavy combat loadout (such as an Anvil paired with a Grappling Hook).

Phase 1: Solo-Friendly Lower Wing Breach Run

You do not need a full squad to farm the initial Frigate breach containers. The lower entry decks contain accessible containers that share the same Amplification Module loot table as the upper hold.

1. Locate an ARC Reclaimer: Watch the sky as the Frigate settles into position and track the smaller Reclaimer transport drones descending to the surface.

2. Dodge Ventral Turrets: Sprint toward the Reclaimer landing zone while avoiding the blue bombardment markers and the firing arcs of the Frigate's underbelly turrets.

3. Hijack the Drone: Climb onto the Reclaimer hull before liftoff and interact to Disrupt its system. Ride it up to the lower docking port.

4. Breach the Symmetrical Lower Wings: Enter the maintenance vent beside the port. Search the breach containers located around the outer wing and elevator shaft, then cross to the opposite wing to clear the mirrored container spawns.

5. Secure and Disembark: Inspect the Mark tier of every module immediately. Slot any Mk. IV into your Augment's protected storage and drop back to the surface toward a standard extraction point.

Phase 2: When to Abort the Upper Core & Cargo Hold

Pushing past the lower wings into the central chamber requires a coordinated three-player squad and massive ammunition reserves. Do not climb the interior shafts solo unless you plan to ambush or ally with another team already aboard.

Disembarking the Frigate does not bank your unsecured inventory—you must still survive the surface trek to an active extraction zone.

How to Unlock Epic Weapon Amplification & Best Mk. IV Upgrades

Looting an Amplification Module MK. IV is only half the requirement; your Outpost infrastructure must be maxed out before the Amplify button unlocks.

Step-by-Step Station Prerequisites

1. Unlock the Outpost: Complete the three-stage Outpost project (Research Topside Living Conditions by photographing a farmland house at Blue Gate's Ruined Homestead, turn in building materials, and damage flying ARC plus a Bully).

2. Expand Outpost to Level 4: Construct additional rooms until your Outpost reaches Level 4, lifting the cap on workbench upgrades.

3. Upgrade Gunsmith & Research Station to Level 4: Upgrading Gunsmith III to IV requires 3 Radial Press, 3 Magnetic Accelerators, and 1 Emperor Modulator (a legendary drop from the Fallen Emperor).

4. Max the Weapon to Tier IV: Upgrade your target Epic weapon to Tier IV (130 durability).

5. Apply Amplification: Open the Gunsmith Weapon Upgrades tab, select the weapon, and spend 1 Amplification Module MK. IV to reach Tier V (boosting durability to 200 and fully repairing the gun).

Eligible Epic Weapons (Mk. IV) & Permanent Mod Trees

Amplification choices on a weapon's branching tree are permanent and cannot be reset. Below are the exact modifications unlocked by Mk. IV modules:

Where does Amplification Module MK. IV drop in ARC Raiders?

Amplification Module MK. IV drops exclusively inside breach containers on the ARC Frigate and within the Fallen Emperor dungeon. It does not drop from standard surface containers or regular roaming ARC enemies.

Can you farm Amplification Module MK. IV solo?

Yes, you can farm the ARC Frigate's lower wing containers solo by hijacking a Reclaimer drone and breaching the entry decks. However, unlocking the Frigate's main Cargo hold requires three players to pull synchronized levers, making full clears strictly a squad activity.

Which weapons use Amplification Module MK. IV?

Only Epic-rarity weapons—specifically the Bettina and Hullcracker—use the Mk. IV module. The Mark number corresponds strictly to weapon rarity (Mk. I for Common up to Mk. V for Legendary), not the weapon's current upgrade level.

Does Amplification Module MK. IV upgrade the Gunsmith workbench?

No, upgrading the Gunsmith from Level III to Level IV requires 3 Radial Press, 3 Magnetic Accelerators, and 1 Emperor Modulator. You only spend the Amplification Module MK. IV after the Gunsmith is already at Level 4 to push an Epic weapon from Tier IV to Tier V.

Should you sell or recycle spare Mk. IV modules?

Always sell true surplus modules for 7,000 Coins or trade them on the player market (~135 Seeds) rather than recycling. Recycling yields 7 Amplified Fragments worth only 3,500 Coins, cutting your net value in half.