Since the release of Patch 1.2.0, Frequency Modulation Boxes-commonly shortened to FM Boxes-have become one of the most critical yet elusive resources in ARC Raiders. These rare blue-tier items act as a major progression bottleneck for most players, as they are mandatory for advancing through Phase 4 of Expedition Project 2 and crafting high-tier tech gear. Unlike common materials, FM Boxes cannot be bought, crafted, or looted from enemy drops. They only spawn in specific high-risk areas, requiring careful planning and ARC Raiders BluePrints strategic exploration. This guide details the best locations, farming tactics, and safety tips to help you consistently find these valuable components.
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