This section is designed to provide assistance to people who want disassemble their mechboxes in order to install upgrade parts such as motors, gears and springs. The basic disassembly steps for all mech boxes is the same, so after going through the process for these two versions, you should be able open up the other models accordingly.

The majority of information on this page can be found in various Japanese airsoft magazines. It was the author's wish to provide more information for the airsoft community that made this section possible.

Check out the Systema Custom Parts Database to see what kind of Custom Upgrades you can add to your gun!