One of mine is a Prospector model, forget what brand, maybe Primos?. It came with a silencer pin. You place it one way to silence the call, the pin prevents the paddle from contacting the sides. When you reverse it, the paddle can touch the side. It also has a rubber band that you loop over the paddle to keep the paddle from moving. Seems to work fine. My other calls are ones I make, and I just use rubber bands.