A guide for maintaining or repairing the G&G ARP 556 in this video by Dretas. He systematically details each step, from removing the body pin and mag release to carefully detaching the motor and gearbox. Emphasis is placed on addressing common problems and ensuring proper technique throughout the intricate process of taking apart the rifle's internal components.

He focuses on resolving a grinding noise caused by the spur gear contacting the active brake lever. He designs and 3D prints custom, narrower shims to eliminate this interference. After successfully testing various shim thicknesses, a 0.3mm shim effectively resolves the noise and, surprisingly, even boosts the rifle's muzzle velocity. This makes the guide a valuable resource for anyone looking to perform similar disassemblies and repairs on their airsoft replicas.

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