Legality?
First, there is no legal issue
The BATF has already signed off on this priciple, its legal
Second there is no registration because there is no part, or parts needing registering.
Third I would not suggest to anyone to do something illegal even to my closest friends. Why own...
If there is enough interest I may build more
completly legal
No springs No full auto fire control parts Installs on converted s12 with 4 screws in existing holes.
Thanks
http://youtu.be/QKgjeMHQnfU