Suitable for Airsoft Electric Gun AEG Gearbox Version 3 Gearbox.
Especially important for upgraded AEG to install this.
This spring guide with Ball Bearing is designed to minimize the load for the motor caused by the spring tension.
It also makes spring effectively spring back.
Backstop is specially equipped with EIGHT Ball Bearing to prevent Spring Tension build-up during Full Auto Shooting Mode.
It greatly reduces the risk of spring breakage.
Thrust bearing for smooth spring compression & release.
Rotating Shaft reduce friction with spring.
Recommended to use inline with Upgrade Spring.


Build: Steel
Lenght: 50mm
Item Weight with Package (gram) :35
Manufacturer :UFC