A metal, strengthened spring guide. Thanks to bearing, The spring is less exposed to risk of its characteristics, which encreases its life span. Meant tobe mounted in gearbox v.2 equipped with system of quick spring exchange Enter & Convert™.

The Enter & Convert™ system allows to easily and effectively adjust the replica's power to the conditions expected on the airsoft battlefield, with no necessity of disassembling the whole gearbox - which often means access to a workshop and the whole range of professional tools. Having taken the gearbox from the body, the process itself takes a few seconds - the spring together with the guide can be pulled out through the hole in the back wall of the frame.