This version is specifically designed for short hilts where you have troubles fitting a standard chassis. With this solution the speaker is moved inside the pommel, saving about 10mm inside the hilt.
The design is very sturdy and will accept the following components:
The chassis will lock in place between extension and pommel.
Board and batteries can be secured to the chassis with some thin PVC heatshrink. The speaker must be glued and secured with PVC heatshrink.