Unique weapons and armor in S.T.A.L.K.E.R. 2: Heart of Chornobyl are hard to find, but searching for blueprints and modules to upgrade them is an even tougher task. Most of them are hidden in obscure locations, and some can be missed entirely while playing through the story.

In this guide, we’ve compiled the exact coordinates of 15 rare upgrades scattered across various regions of the Zone.

Location: Cordon

  • Protective Coating for the SEVA suit: Located deep inside the “Death Cave.”
  • High-Capacity AR416 System Magazine: Look for it right on the driver’s seat of the abandoned train.
  • Counterweight Blueprint for Kharod: Hidden on the side of the building at the outer checkpoint in the northern part of the Cordon.

Location: Lesser Zone

  • High-Capacity PTM Magazine: Located inside the soldiers’ barracks beneath the sphere. You can only access this area while completing the “Seven Seals” mission. Once the quest is complete, you will not be able to return to this location.
  • Enlarged magazine for the AKM-74s / Dnipro: At the very end of the tunnel, behind a metal grate, lies a backpack. This is the “Stalker’s Hidden Items” stash on the retreat route during the “Seven Seals” quest.
  • Expanded magazine for the Viper-5: Hidden in a duffel bag behind the destructible wooden crates in the storage area marked with a radiation hazard sign.
  • Expanded PTM Store (Alternative): If you missed the first one, there’s another one on a table in a building without a marker on the map, west of the northern checkpoint.
  • Tactical Pistol Suppressor for the UDP / M10: Found in a backpack on the roof of a house in the middle of the Poppy Fields.

Location: Dump (Garbage)

  • Enlarged magazine for the M10: Hidden in a chest on the hydroelectric power plant grounds.
  • Return Mechanism Sleeve Tightener for Integral A: Found on a corpse in the underground section of the hydroelectric power plant (near the previous cache).
  • Rubber Layer for the M10 Gordon: Look on the roof of the entrance to the Iron Gate in the northern part of the Dump.

Location: Yantar

  • Sewn-On Pockets: Found at the trailer dump in the western part of the Amber region.

Location: Pripyat

  • Extended magazine for the Saiga D12 shotgun: Hidden in the kitchen inside the shopping mall.

Location: Red Forest

  • Airtight Polyethylene Lining for the Bulwark Exoskeleton: Found inside a safe in dusty cable tunnels. Note: You can only access this area after reaching a certain point in the main story missions.

Rewards for Tasks

  • Rubber Layer Blueprint: Awarded as a reward if you choose to side with the Ninth in the side quest “The Lost Boys.”