I agree with you but, since the ratification of the Civil War Amendments, and specifically the 14th Amendment, the Supreme Court has decided which rights are “fundamental” and to what extent that right applies. We can all agree that inciting a riot or falsely yelling fire in a crowded theater, are not protected by the First Amendment. When they look at these rights they also look at what restrictions the states had on them at the time leading up to the 14th Amendment. Before the 14th, most states banned concealed carry but allowed open carry. That was not considered an infringement. So, until SCOTUS speaks, we wait.
One thing unique about the 2nd Amendment, as compared to the 1st, 4th, 5th, 6th and 8th Amendments, is that the Supreme Court, in both Heller and McDonald, avoided the issue of what level of scrutiny the courts should apply when evaluating how a right can be limited. There are 3 levels, Strict Scrutiny, the highest level, Intermediate scrutiny and Rational Basis, the lowest level.
Beginning with rational basis, most restrictions are at this level and the government can place restrictions on activities if there is a rational basis for making the law. Pretty simple, a law must serve some legitimate government interest and there must be a reasonable or rational link between that interest and the law.
Intermediate Scrutiny is next and has been used primarily with laws relating to gender and sex. In order for a law to pass intermediate scrutiny, it must *serve an important government objective , and be substantially related to achieving the objective.
The highest standard is Strict Scrutiny. Strict scrutiny is generally used for laws that discriminate on the basis of race, national origin, religion, and alienage and is also applied whenever a “fundamental right” is being threatened by a law. Strict scrutiny requires the government to prove that there is a compelling state interest behind the challenged policy, and the law or regulation is narrowly tailored to achieve its result.
Considering Heller and McDonald recognized that the right to bear arms is a “fundamental right”, it seems appropriate that strict scrutiny ought to apply.