Infinity's are standard issue from "the Company" in the series "Heroes" That's when I first heard of them. When I first saw them, I thought, "Wow, looks like a real Hollywood tricked out prop gun", until I caught the name on side of one and looked it up.
SV's tie to Heroes actually goes through the movie version of Miami Vice. Taran Butler, who used to be on SV's shooting team, does a lot of weapons training you see in modern film. That gun that Hayden (not even going to bother looking up the last name) aka Cheerleader is often seen with was supposed to be in the MV movie.
Taran also did the weapons training for The Kingdom and a few other recent films. Does some of the best inpersonations you'll ever hear of just about anyone, funny as hell, and one of the best competition shooters in the world right now.