Airsoft Gearbox Guides & Technical Articles

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...

If an AEG stops cycling, release the trigger and disconnect the battery. Repeated trigger pulls can heat the motor, wiring, battery or ETU and may turn a simple stoppage into component damage. Start with...

A gearbox bushing should seat flat and remain fixed in its shell bore. If it moves, first determine whether the bushing is the wrong size, the shell bore is damaged or the installation is...