K40 Laser Engraver Mirror Alignment Plug

This is a simple holder for a mini 6mm laser diode module that fits into the tube of a K40/equivalent CO2 laser engraver/cutter.

There are channels on the side for the laser module wires to exit the tube to connect to a battery.

There is a flange to prevent the plug from going too far into the tube and to lie flush against the tube to ensure the laser is centered.

This is my first Thing. Please tell me if I'm doing something wrong/ignorant. Do not hesitate to educate/correct me. I'm here to learn!