Systema Ball Bearing Ver. II Spring Guide For Airsoft AEG

SYSTEMA Spring Guide with Ball Bearing is designed to minimize the load for the motor caused by the spring torsion, especially when compressing the custom spring.
It also makes the spring effectively spring back.
SYSTEMA Spring Guide is the one of the our best-selling parts.
Notice : SYSTEMA Spring Guide cannot be assembled with some of the custom springs because it pushes up the spring slightly and eats uo whole space. It is recommendable to use SYSTEMA Spring with SYSTEMA Spring Guide.