Here's a project of Kirby Downey, creating a Battlefield 4 Rorsch X1 Airsoft Gun with 3D Printing. You may wonder why the colours are bright, perhaps due to the VCRA as it is illegal for an individual to manufacture Realistic Imitation Firearms (RIFs) in the UK. It becomes legal when it's 51% brightly coloured and called an IF (Imitation Firearm)... "The Rorsch X1 is a Rail gun from the game Battlefield 4.