Prometheus Spring Guide Smoother Ver.9 for Tokyo Marui AEG

When the spring is compressed, there is a force of rotation on it??and even if the spring is fixed, there is also a force pushing against the spring guide, this will decrease the life of the spring under this conditions. This Prometheus Spring Guide is using Thrust Bearing to decrease the force pushing against the spring; and also the rotating "Tornado Shaft" provides a smooth surface, and thus decrease the friction of the spring, and will provide the largest ability of the spring. Laylax suggest to use it with the Piston Head POM or Metal to provide the highest ability.