It's not player made in the Trade Skill sense.
It's made by combining a piece of Steel-Welded Ringmail OR a piece of Ancient Scaled Armor OR an Un-cored Chain Coif Template (sold for 30449, 9, 9, 8 plat by Automated Vending Unit II in Dragonscale Hills at indifferent faction after completing a Tier 3 raid associated with that armor slot) with a Gyro Core: Dedicant (looted from a Tier 3 raid) in a Gyro Core Embedder (sold by Automated Vending Unit II in Dragonscale Hills at indifferent faction).
Gyro Core Dedicants may also be made by combining any Gyro Core (looted from a Tier 3 raid) with Dedicant Core Gear Kit in Gyro Core Re-gearing Kit (both sold by Automated Vending Unit II in Dragonscale Hills at indifferent faction).
Zycon
Prexus
Sword of Fate