The Ultra slug hunter should accept any of the standard NEF or H&R BBLs. If you can find one, there should be no reason it won't fit. You will, however have better luck with the 3" or 31/2 12 gauge barrels. You will be able to find cheaper, more available ammo, and the 12 gauge is all I will ever use. It simply gets the job done.
h&r ultraslug hunter
