It's important to remove the anti-static security, otherwise it won't work! Some lasers come without the anti-static security.

You need a soldering station to DESOLDER the anti-static (if it's there), without de-soldering it, the laser could be busted!!

Remove the anti-static security. Use some copper wick to remove the solder.

When it looks like in the 3rd photo, you are good to.