A Few Random K'nex Concepts, Guns, Etc. By Spycrab in LivingLEGO & K'NEX959114Introduction: A Few Random K'nex Concepts, Guns, Etc.By SpycrabFollow More by the author: About: K'nex guns, TF2, and Valve games are what I like to build/play. More About Spycrab » Basically what the title says. If, for some strange reason, you guys want me to post any of this, I might.