The Extended Light Mag II blueprint in ARC Raiders is not tied to one fixed map spot; it drops from regular loot sources, especially containers in industrial or military areas, and can also come from quests or trader sources.

Where to look

  • Industrial or military containers. These are the most consistently mentioned loot sources for the blueprint.
  • High-value loot zones. Players and guides point to denser loot areas as better farming spots, even though the drop is still random.
  • Quest rewards. The wiki lists it as a quest source from Market Correction and Snap And Salvage.
  • Traders. The wiki says it can be bought from Shani and Tian Wen.

Crafting once unlocked

After learning the blueprint, you can craft it at Gunsmith 2 using 2 Mechanical Components and 3 Steel Spring.

Practical farming tip

If you want the fastest route, run loot-heavy industrial or weapon-cache areas and open as many containers as possible, since the blueprint appears to be a random drop rather than a guaranteed spawn.

[2] [4][1]
SourceWhat it says
WikiScavenging, crafting, Shani, Tian Wen, and specific quests can all provide Extended Light Mag II.
GuideIndustrial/military containers and high-loot zones are the main farming targets.
TL;DR: farm industrial or military containers, check quest rewards, and watch trader stock; there is no single guaranteed fixed spawn.