This is the internal mag box that you have to do some milling to open the action for right? Have you done the machining before? I'm interested just not sure if it's a diy (die grinder / dremel / drill press) or gunsmith (mill) job
Yes you do have to do a little milling and no I haven't done it before. You can do it if you feel comfortable with it. Directions are on the Wyatt's site.