Hi, Vince - at this point, we are not offering a silencer.
That is, unless something has changed that I'm not aware of.
I find that most people using 1/2 A engines do not bother with a silencer.
And, by the way, if you are running in any of the small Brodak engines, it's best to omit the silencer.
And, only use it if it's really needed.
Bob Z.