National Firearms Act (NFA). Title 26, United States Code, Chapter 53. The implementing regulations are found in Title 27, Code of Federal Regulations, Part 479.
Gun Control Act (GCA). Title 18, United States Code, Chapter 44. The implementing regulations are found in Title 27, Code of Federal Regulations, Part 478. i.
Transfer: Selling, assigning, pledging, leasing, loaning, giving away, or otherwise disposing of a firearm.
5. All ammunition feeding devices (magazines, strips, and drums) capable of accepting more than 10 rounds.
I guess I’m supposed to stuff cotton balls into my XDM magazine? Or perhaps cut the grip down to size with a hacksaw so a 10-round mag will work?