Peter Geyer Action Props, Los Angeles: Custom Props and Breakaways Manufacatured from: Silicones, Rubbers, Balsa, Plastics, Aluminum and Steel. Including: Rubber and Plastic Guns, Knifes and Blood Knifes, Action Retractables. Special Effects Devices, Rubber Mannequins, Fake Razor Wire and Barbwire. Lighting Design and Reproductions of all kinds. Silicone Glass, also called Rubber Glass (Soft, Shiny and Very Safe).