First get a piece of metal tubing that is pre-threaded and had a nutt that witt screw on the end. Remove the old plastic outer barrel but NOT the METAL INNER BARREL. Cut the tubing so that the threaded part extends out of gun as shown. Drill out the inside of the tubing so it will fit over the place where the old (plastic) outerbarrel fit on. Use epoxy to secure the outer barrel. Now grind the nut down so that it will fit inside a piece of copper tubing. The tubing can range in size depending on what thick ness of silencer you want. Solder the nut inside the copper tubing. Try to be as straight as posible so the silence will fit correctly. You can make multiple silencers for different needs. NOTE:this does not silence the gun at all and even if it is installed on a real gun there would be no affect on the sound of the report. If you have any questions email me @ m9spec@yahoo.com