Semi-automatic technology is over 100 years old! Semi-automatic(aka Self loading)tech is not machine gun full-automatic tech, some firearms merely look similar. Civilian ownership of such firearms are a right, not a privilege.
Current "laws" suppressing ownership are blatant infringements. Having a semi automatic heart means you represent the unique freedom & liberty of America, and are standing watch over those sacred rights. I have this heart: How about you?