Unless they have added options, don’t believe they fit the Howa mini action, and some of those calibers BA’s are mini actions. Be something to check on.If you already know you're replacing the stock, grabbing a Howa barreled action would be your other option. Brownells has 223, Grendel, 6ARC, etc. Add an MDT field chassis for $299.
Keep an eye out for discount codes that come around frequently and you can do pretty well in terms of accuracy and value for dollar.