DK ARMAMENTS Pro-Series Precision Stainless-Steel Airsoft shims are an essential component to anyone looking to upgrade or build a high-performance smooth-running gearbox.

A well shimmed gearbox can provide reduced noise form the gears when in use, shims can also help improve and provide greater effective power transfer from the motor, gears and overall internals of your gearbox.

A well-tuned gearbox can result in improved gearbox cycling efficiency, noise reduction and can improve the overall durability and efficiency of your gearbox internals and can prolong the useful serviceable life of your AEG gearbox internals.