Quiet Gearbox? Yes Please!

Was originally introduced to this by another airsoft enthusiast who installed them into his AEG and showed me the results. After installing the gears and re-shimming the box, I was very impressed at how almost all of the gear noise had been eliminated from the firing cycle. All I can hear when firing my gun is the cylinder stroke.

Note that you will need to remove the old motor gear and press fit the new helical one in place. Specialized tools are required, so this may be worth taking to a tech for install if you aren't comfortable with going inside of your gearbox.

INCREDIBLY QUIET

I was first introduced to this modification by a fellow airsoft enthusuiast who purchased it, and brought their motor to me to have the new gear fitted. They brought the AEG back in after they finished installing and tuning the kit and I was VERY impressed by how much gearbox noise had been reduced. I decided to try it for myself and ordered a set for my ICS MARS rifle. You will require specialized tools to remove and replace the motor pinion gear, so check with your local pro-shop to find someone who can replace this gear for you if you do not have the tool yourself.

Helical gears are less forgiving than standard straight-cut gears, so you need to be precise in fitting and tuning. After fitting and adjusting motor height, there was a significant reduction in gear noise during the firing cycle, to the point where all I could hear was the compression stroke of the piston and the engagement between the sector gear and the piston. I will be putting these kits into all of my aeg rifles.