TargetTalk

What is the name of the substance that is used to dampen the the noise of the pellet hitting the metal at the back of the pellet trap. I believe it is some type of "putty" but I do not know the exact name. Any help would be apprecitated.

For sale. Rika HomeTrainer. Includes sending unit, receiver and control box, one RS232 connection cable, two power supplies and the Rika HomeTrainer Software. The trigger pull sensor and the heartbeat monitoring device is not included. Asking price $1250 Canadian.