Prices Drop! 501B Kits (Plug-N-Burn add a Module w/ Driver!) Starting at $20ea

[APEX1]

Re: FS: 501B Kits (Plug-N-Burn, add a DTR Module w/ Attached Driver!) Starting at $30

special ring pressed into battery tube to ensure excellent negative contact.

Build your own laser for cheaper than you can buy one will little to no work!
https://sites.google.com/site/dtrlpf/home/diodes/445-m140-didoes

is this kit stil for sale??