Sure, a standard TV-B-Gone may get the job done, but this rifle hack adds 30 infrared LEDs, a mineral crystal lens, and a blue LED laser for supreme aim. Click here for first picture in gallery.
I took a lens out of a old beamer, and used a PVC tube to fit all the stuff in. After all i painted it black, paint doesn’t hold too well on PVC but whatever. It’s possible to focus the beam by turning on a blue led and slide the leds when loosening the screws on the side