ISIS thugs could soon be using 3D-printed machine guns that cost £100. Ruthless Cody Wilson could put the lives of hundreds of innocent Brits at risk by handing terrorists the ability to build 3D weapons . And the firearms fanatic was tonight branded irresponsible for boasting his world-first printable plastic weapon may be available within weeks - as fears grew that IS thugs may launch a Paris-style massacre on UK soil with them.