Brownells sell the 20 heavy barrel actions and sell a couple of chassis. If you dont mind the heavier threaded barrel compared to the 22 lightweight barrel I think it is cheaper to buy just the action compared to a whole rifle then buying a separate chassis. I know Legacy Sports was selling the mini action in a Chassis stock as a complete rifle but you rarely see that option for sale. You might have to get a dealer to order a complete chassis stocked rifle from Legacy Sports International.
https://www.legacysports.com/catalog/howa/howa-oryx/
At one time Brownells had an exclusive agreement with Legacy Sports Int. as the sole vendor for Howa barreled actions.
https://www.legacysports.com/catalog/howa/howa-oryx/
At one time Brownells had an exclusive agreement with Legacy Sports Int. as the sole vendor for Howa barreled actions.