A package of Airsoft Guns upgrade parts, including spring guide , piston head and ball bearing (6 pcs) .

Spring Guide :
This reinforced Spring Guide replace the original Stock Spring Guide of Airsoft AEG
This spring guide with Ball Bearing is designed to minimize the load for the motor caused by the spring tension
Especially important for upgraded AEG to install this
It also makes spring effectively spring back
Backstop is specially equipped with Ball Bearing to prevent Spring Tension build-up during Full Auto Shooting Mode. It greatly reduces the risk of spring breakage
Suitable for Box Kit Version 2

Piston Head :
Essential part for upgrading your Airsoft AEG
Duracon Piston Head with Thrust Bearing is renewed to be more effective
It creates soft & quieter shooting sound
As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed

6 pieces of ball bearing :
Made from high grade steel, very strong, very smooth.
Replace the original bushing to reduces probability of a gear strip due to bushing failure.
7 mm steel bearing for all gearbox versions.
Color:Silver