In this tutorial, we learn how to make a silencer for the TF-11 airsoft gun. You will need: 1 1/4" PVC pipe. First, cut the pipe to 7.5 inches from the bottom with pipe cutters. After this, get a reducer and a 5/8 nut, then pound it inside of the reducer and glue it in with a hot glue gun. After this, tape it and then spray paint it black. Next, sand your barrel down and then spray paint that as well. Then, glue the reducer into the barrel, and then you can use this as a silencer and enjoy!