No but If you find one , you are likely to get sticker shock
You might just try a makeshift weight tapped or screwed to the barrel to see if the lighter weight works for you before committing $. I've done this with several airguns/.22's in the past and it helps dial in what I'm looking for.
FWIW, I've even shaped my own from aluminum, steal and lead and then painted them to look pretty decent.