Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4764653.

new idea for easier release of module. a simple lever held tight by nut. with lever up it is locked. when turn lever down 180 degrees its unlocked and module can slide to focus. no need hunting for allen wrench.

5mm nut, 5mm bolt and 5mm id washer, can be store bought.

lever can be printed with thread an if off can be threaded with 5mm tap.