Reinforced gearbox shell V2 QD 1.5 with 8mm bearings and QD spring guide

The gearbox skeleton from E&C is designed with MARUI standards in mind, ensuring compatibility with a wide range of airsoft guns. The skeleton is tailored for airsoft guns with a V2 type gearbox (MP5, M4, G3, etc.). Features a quick-change spring (QD) without the need to disassemble the entire gearbox.

The package includes 8mm ball bearings, mounting screws, and a spring guide.

During the installation of internal components or the gearbox itself, never apply excessive force. Tightening the screws excessively is unnecessary; if you want to ensure they won't loosen, use threadlocker or paint.

Installing internal components into the gearbox, as well as the gearbox into the gun, requires expert knowledge, experience, and skill. Due to the wide variety of airsoft gun manufacturers, each having its unique dimensions, and the absence of standardization in airsoft, unlike conventional engineering standards like ISO, etc., one gun type from different manufacturers can be entirely different in size, internal components, or mechanisms. Therefore, we recommend gun manufacturers that state Tokyo Marui compatibility, where compatibility issues are less likely to occur.