In this site, I found this:

FBI-9 Assault Rifle-A weapon created by Imperial Laboratories Designer Tzymine Xanthin, the FBI-9 is chambered for 5.56 mm ammunition. It has a 30-round magazine normally, though it is compatible with a 100-round drum magazine. The gun itself is of moderate power and good accuracy, and is compatible with a 40mm grenade launcher attachment. A number of different types of grenades are available, including standard frag grenades, incendiary grenades, flashbangs, and the typical Imperial electro-grenade.

I'm with doubt about what this guy is, if is any of Krinkels' fan, or somthing. I need the help of you guys, because the Image I found by clicking in the link appears th FBI-9 from Krinkels.