I guess you're referring to http://www.arrowlasershot.com

I have one, just the laser/trigger set-up, in 12g & 20g.Didn't buy the projector.
Interesting and useful to use, but I shot like crap for a while after I first used it, as I was "thinking" rather than shooting naturally. After I stopped thinking I improved and shot better than before. Certainly good for gunfit.
Rs
K.