Laser weapons have been for a long time the domain of the science fiction story writer; this has been a disappointment to many gadget fans and now it seems that their wishes could be answered with this cool NES pistol mod, see it in action next.
Here are the details on what you are going to need to build this cool NES laser pistol;
2.1A input buck driver, 2x 750mAh 35-70c Lipo batteries, M140 445nm diode, G2 lens. Homemade custom heat sink, turn key safety switch. ALWAYS WEAR PROTECTIVE GOGGLES. Learn how to build one at North Street Labs.
Source [Nerd Approved]