I have one with a 4-inch barrel, and the "Barkeep" model with a 2-inch barrel that I converted to a bird's head grip.
Both work well with .22lr and .22WMR cylinders. Fun little plinkers.
....I got one at a gun show several years ago and have put many rounds through it..never had a problem....two backstrap screws backed out and I called Heritage and they sent me a complete set of screws immediately....otherwise it is a fun gun to shoot........