Machined from 4130 Steel, these adapters let you shoot 20g from your 12g chambered break action shotgun. They can be used in a pump action also, but it is recommended that the extractor be removed from the bolt before doing so.
They are $49 plus shipping. You can get yours at www.rxarms.com.
They are sold in raw finish, oiling them will preserve them, but if you want a parkerized version, please contact me and I can do that for you for a bit extra.
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Original message:
I have had an inquiry for this, just wondering how much demand there is if I made a run of this adapter?
Edit: it is up on the site if you want to get notified when it is in stock. www.rxarms.com