I dunno if anyone's still gonna see this thread but I figured i'd point out just for anyone trying to figure this out that the schematic for the project actually uses a transistor to turn the laser off and on, so any laser will work as long as you connect the laser to the arduino via the transistor and not directly into the digital output pin. I haven't gotten it to work fully yet but when I do I plan on uploading some pictures or videos for those who are interested.