Ak version? Possible. 10/22 version? Impossible. The concept works on recoil, and a
10/22 has none to speak of. But it would be fun, nonetheless.
But to answer the OP, they are correct. It is unregulated. It is basically an after market stock as far as the government is concerned at this point.
Glaine ár gcroí
Neart ár ngéag
Agus beart de réir ár mbriathar