ZCI CNC STEEL 3MM SHAFT GEAR SET 13:1 SUPER HIGH SPEED

If your AEG feels sluggish on trigger pull or you're chasing a higher rate of fire without rebuilding the whole gearbox, the stock plastic or low-grade steel gears are usually the bottleneck. The ZCI CNC Steel 3mm Shaft Gear Set replaces that weak link with a 13:1 super high-speed ratio gear train, cut from steel on CNC machines instead of cast or stamped — the difference shows up in how tight the teeth mesh and how long they hold up under sustained semi and full-auto fire. The set is a 3mm shaft fitment and drops into most standard AEG gearboxes (V2/V3 style) without needing custom shimming or machining — pair it with a good bushing/bearing set and proper shimming for best results, like with any gear swap. Whether you're building a speed-focused CQB gun, upgrading a stock rifle that feels underwhelming, or replacing worn-out gears that have started grinding, this is a direct, drop-in way to get more performance out of the gearbox you already have. Features: CNC-machined steel construction — tighter tolerances and better wear resistance than cast or stamped gears 13:1 super high-speed ratio for a noticeable increase in rate of fire and trigger response 3mm shaft fitment, compatible with most standard AEG gearboxes (V2/V3 style) Direct upgrade over stock gearing — no major machining required Ideal for CQB builds, speed-focused setups, and replacing worn or stripped stock gears