When US forces went into Iraq in 2003, they had zero robotic units on the ground. Now they have as many as 12,000. Some of the robots are used to dismantle landmines and roadside bombs, but a new generation of robots are designed to be fighting machines. One robot, known as SWORDS, can operate an M-16 rifle and a rocket launcher [..] Basically there’s a do-it-yourself kit for building very similar to a Raven drone.
http://www.democracynow.org/2009/2/6/wired_for_war_the_robotics_revolution