Get the right gearset for your AEG build at MiR Tactical. We carry standard ratio, high-speed, and high-torque gearsets to match your performance needs. Whether you are replacing worn internals or upgrading for faster cycling or improved trigger response, you will find durable, high-quality parts from trusted brands. Perfect for airsoft techs, DIY builders, and competitive players who want reliable, smooth-running gearboxes.
GEARS
Airsoft AEG Gears and Gearsets | Sector, Spur, and Bevel Gears
The gear set inside your gearbox is what converts your motor's spinning into the linear pull that cocks the piston, and the ratio those gears run at shapes almost everything about how your gun feels to shoot. We carry airsoft AEG gear sets across a full range of ratios, from high-speed to high-torque.
What Airsoft AEG Gears Do
A standard AEG gearbox runs three gears in sequence, the bevel gear connected to the motor, the spur gear in the middle, and the sector gear that directly engages the piston rack. Together they convert the motor's rotation into the linear pulling force needed to cock the piston against the mainspring on every single cycle.
Airsoft Gear Ratios Explained
Gear ratio is usually written as a number like 12:1, 16:1, or 18:1, describing how many times the motor has to spin to complete one full gear cycle. A lower ratio (closer to 12:1) turns the gears faster per motor rotation, favoring a higher rate of fire. A higher ratio (18:1 and up) turns slower but with more mechanical advantage, favoring the torque needed to pull a heavy spring on a high-FPS or DMR build.
Airsoft High-Speed vs. High-Torque Gear Sets
High-speed gear sets run a lower ratio and prioritize rate of fire, well suited to a lighter spring and a build focused on volume of fire in CQB. High-torque gear sets run a higher ratio and prioritize the ability to cock a heavier spring reliably, which matters more on a DMR or high-FPS build where a high-speed gear set would strain the motor and battery unnecessarily.
Matching Airsoft Gears to Your Motor and Spring
Gear ratio, motor type, and spring weight all need to work together rather than being chosen independently. A high-torque motor paired with a high-speed gear set can still struggle if the spring is too heavy for that combination, and a high-speed motor paired with a high-torque gear set may not deliver the rate of fire you're expecting. Check our motors and springs selections to build out a matched gearbox setup rather than upgrading one part in isolation.
Airsoft Gear Materials and Durability
Standard steel gears are the baseline for most builds. Hardened or stainless steel gear sets resist wear and stripped teeth better under heavy or high-rate-of-fire use, which matters most on a gun that sees frequent, sustained trigger time rather than occasional casual play.
What to Look for in an Airsoft Gear Set
Once you know your build's priorities, a few details determine whether a gear set performs the way you expect.
Ratio Match to Your Goal
Pick a ratio based on whether rate of fire or spring-pulling torque matters more for your build rather than picking whichever set is cheapest or most popular.
Compatibility With Your Gearbox Version
Gear sets are sized to a specific gearbox version (commonly V2 or V3). Confirm compatibility before ordering, since gears from one version generally won't fit another correctly.
Material and Hardening
Hardened or stainless gears cost more but resist stripped teeth and wear far longer under heavy use than standard steel.
Airsoft Gear Set FAQ
What gear ratio do I need for a higher rate of fire?
A lower ratio, closer to 12:1, turns faster per motor rotation and favors rate of fire, best paired with a lighter spring.
What gear ratio is best for a DMR or high-FPS build?
A higher ratio, 18:1 or above, gives the gears more mechanical advantage to reliably cock a heavier spring.
Do I need to change my motor if I change my gear ratio?
Not necessarily, but the combination matters. A mismatched motor and gear ratio can underperform even if each part is good on its own, so check compatibility together rather than separately.
Are all AEG gear sets the same size?
No. Gears are sized to a specific gearbox version, commonly V2 or V3. Confirm your gearbox version before ordering.
Do hardened gears last longer than standard steel?
Yes, particularly under heavy or high-rate-of-fire use, where standard steel gears are more prone to stripped teeth over time.