Looks like a (cheap?) variation on the eReal gun. Different from Actlabs/namco hack in that it completely ignores your tv, meaning it can work on a projector/flatscreen etc... whereas the others needa CRT monitor.
The main issue with guns like this is that accuracy is not as good as lightguns, because they use a usb camera pointed at the gun to detect where its pointing. This makes it very easy to uncalibrate, by saying moving your position sideways by a few inches....
It does mention "2x LED stands" with this gun, which is potentially interesting. Suggests 1) the detector/camera/whatever they use is in the gun itself, and 2) it uses 2 points of reference (3 altogether include the gun) which
potentially could make it far more accurate - depending on how good it is at triangulation.
My instinct says this is cheap and not that accurate, but I'd like to proven wrong. Cant find much info on it though....
EDIT: This may be more interesting than I thought.
Just found this site:
http://www.hkems.com/product/xbox/LCDTopGun.htmIt has proper pics and links to the guide/faq/user manual/calibration video. Thoses LED stands look much more interesting - They are thin and tall, and 1 appears to have 3 sets of LED's on it in the diagram, and other has 2. This gives you FIVE sets of Infra-red (which is what it uses) points around your screen, with a infra-red detector built onto the gun.
This is actually quite similar to the technology used in the later House of the Dead series games (sega I think - they had 6 sets of infra red LED's - although they may have been detectors as well/instead).
Potentially, I think this could be very accurate. It also supports 2 player guns - although somewhat bizarelly it states that to use 2 guns you need to remove one of the LED stands. Trying to work out what this suggests about how they are using the technology. It may be there are detectors in the stands too... Anyway, doesn't matter much unless its well made with good drivers. Which means someone needs to test one

Anyway, the last few seonds of the calibration clip (they are playing with a projector by the looks of it) it appears the shots are very accurate on the laser pointer.
Hmm, potentially accurate, vibration, no screen flash, no dodgy tracking on dark areas, no re-calibration unless you move the LED stands. Hmmm....