Cool article that I've never seen. A couple stories I've never heard. Strange that he calls the M7 a "PVC K47." It was always an M7, and is even listed as such on the schematics. No discussion of NDWR having designed and developed the M49, and the MSC2 tube being the original tube. He also leaves out the development of the M50 gold and aluminum capsules. The aluminum is everybody's favorite. I wonder why that was glossed over.