Sure, just find a ,22 Versa Pak barrel and add it to your 20 gauge USH frame. They (.22 Versa Pak barrels ) come up for sale here every so often. You might try posting a WTB for just a VP .22 barrel or for a complete Versa Pak, a .22 LR/.410 combo gun which unfortunately they no longer produce. Hopefully some day they will either make them again or at least do a limited special run of them.
I have two, they are for the grandchildren (
) so now as of 3 weeks ago I need another, we have another granddaughter!!
One .22 LR VP barrel has been reamed out to .22 Mag and it, as the others here that have been brought out to .22 Mag, is a TACKDRIVER. I would really like to get another Versa Pak for my new graddaughter and another barrel to exchange for the barrel I reamed out to .22 Mag. I want to keep that one for myself and pass on the VP's with .22 LR barrels for the grandchildren, much cheaper for them to shoot and I believe better for them to begin with and to learn with.
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