I also wrote MagPul and gave them a pitch to relocate to the PNW - rebuild in the Great American Redoubt.
The fact is that cars once made Detroit great. Similarly, companies that manufacture firearms and magazines should concentrate their facilities in areas where their community support, jobs, and commitment to the area will be welcomed and valued. Form enclaves of mutual support in gun friendly states.
This issue isn't going to go away. It will remain a hot button topic for years to come. Dealing with the issue intelligently now may determine a firearms company's success years into the future.
Treat everyone you meet with dignity and respect....but have a plan to kill them just in case.