Ive used the 12g BeanBags, Stingball, Pepperball, and I have to say out of them all I would choose this monster any day of the week over them.
Made by FNH it fires a .68 Cal Round in several flavores. My fav is the combo round. Non smear/Uv marker round incased in a hard plastic shell with steel shaveings for that little extra oomph. As can been seen in the pic above, bottom half marker paint, top half pain causeing goodness.
Failing that Flashbangs are cool.