Ya heres how you open the laser! I made the mistake by drilling into my first one and the pot turned out to be on the bottom :

Then I started drilling the the bottom part and the pot was insight but when I pressed the drill button a little harder, the bit gripped the edges(metal) and the bit just shot straight into the pot and ruined the laser...
Here is how you open it.
Throw a towel over a table vise ( to prevent scratching ) and put the silver tip of the laser in there. Put the tip 3/4 in, not all the way to the black. Tighten it to the point were the tip cannot slide out or anything. This is going to have to be pretty tight, it is scary doing this part because it feels like your are just gonna crush the whole tip. Let me tell you now, I have applied alot of pressure on it multiple times and I didnt even bend it. So the tip is pretty strong. When that is tight start wiggling and pulling it. Wiggle forward and back and pull out. When you start to see it seperate SLOW DOWN on the pulling. If not, the thing may just rip apart suddenly and you might F up the laser such as knock off the actual button ( not the plastic piece, the real button ). You will see that there is no glue, it is just very tight.
HERE IS A WARNING!
When you pull it out, the button will fall. DO NOT let the button sit on top of the batteries! I didnt think letting the button sit ontop of batteries would do anything but when I poured the button out onto my hand, it got stuck in the webing of my fingers and burned me. IT GETS EXTREMELY HOT!
Ask if you have any questions...
( You guys want me to make a longer more detailed tutorial on this for a sticky? So questions like these dont get repeated. Just ask... )