This one is on top of our list of bullpup rifles that need to have an airsoft version. Used in the movie District 9, the Vekctor CR-21's origins is South Africa and Larry Vickers gets the honour to lay his hands on one for this episode of Vickers Tactical's TAC-TV... "Larry introduces an extremely rare bullpup, the Vektor CR-21. From South Africa, this gun was featured in the film District 9. This gun is 1 of only 2 known in the United States."