Endless Paradigm

the US already has 'killer robots'.. wee have little RC cars with tank treads with guns mounted on them, wee have UAVs the that fire hellfire missiles... not anything like you described but the US spends more money on the millitary then any other three countries combined.. must be paranoid or something.. AUS. developed a pretty interesting metal storm weapon lately

Yeah, i doubt it will ever be robots vs humans for long though cause the robots have perfect aim, perfect reaction time etc, and maybe multiple guns

%^^ and double shielding!!