The Howa, the Vanguard, and the SW are interchangeable for stocks. 260Remguy is who you want to chat with about them.
Add the Mossberg 1500 to the list. All four are interchangeable for stocks, most you might have to do is a bit of relief if you have an aftermarket trigger/safety. Seem to recall Interarms being the original importer before Legacy took that on, but without doing some digging, I won't commit to confirming that. Boyds is typically pretty helpful. If you're looking at one of their pre-mades, just call and ask them. If you're not, the Howa is listed in their action drop down.
