AEG Delayer Chip: Function, Limits and Fit
A delayer chip changes when the sector gear moves the tappet plate. It can extend part of the nozzle-open period, but it does not increase tappet-plate travel and is not required in every AEG.
What it can change
The chip changes the contact profile between the sector gear and tappet plate. In a build with a verified feeding-timing problem, that change may provide more time for a BB to enter the chamber. The result depends on the gear, tappet plate, nozzle, spring and complete cycle.
What it cannot prove
Installing a chip does not prove that the nozzle profile, tappet-plate travel, air seal or piston timing is correct. It is also not a direct fix for premature engagement of the piston.
Check fit before powered testing
- Confirm the chip is secure and does not contact the gearbox shell.
- Rotate the gear train by hand and watch tappet-plate movement.
- Check that the tappet plate returns without binding.
- Reassemble and test controlled cycles before sustained fire.
If the original problem has not been identified, diagnose magazine feeding, nozzle movement, tappet-plate condition and hop-up alignment before adding timing parts.
For the related sector-gear contact point, read the tappet plate pin position analysis.