Airsoft Gearbox Guides & Technical Articles

An AEG gear ratio describes the reduction through the gearbox gear train. A lower numeric ratio such as 13:1 provides less reduction than 18:1, but that does not make it automatically better. The right...

Changing from a self-shimming gear set to conventional AEG gears is a gear-set replacement and shimming job. Do not remove springs or modify the old gears with the expectation that they will become a...

A stuck trigger, repeated click or unreliable semi-auto cycle can involve the trigger trolley, cutoff lever, selector parts, springs, contacts or sector-gear cam. Do not replace the cutoff lever until the interaction is observed...

SR25 is an AEG platform with a gear-set boundary that should be checked before ordering. The current JVAN SR25 product is a complete set containing one sector gear, one spur gear and one bevel...

“100% air seal” is not a useful pass-or-fail promise for an assembled AEG. Diagnose the compression path in sections, then verify the completed replica with repeatable chronograph readings and normal feeding. Test the piston...

An AEG motor must match the gear set, spring load, battery, wiring and available motor space. Labels such as “high torque” or “high speed” are useful starting points, but they do not describe the...

AEG gearbox lubrication should leave a light, even film on the correct moving surfaces. More grease is not better: excess lubricant can collect debris, move onto electrical contacts or reach the hop-up and inner...