From The Federalist:

Dred Scott has several implications for the Bruen case. First, it affirms that the Second Amendment right to bear arms is a normal individual right, like the other individual rights listed in the case, such as free exercise of religion, freedom of speech and of the press, jury trial, and so on.

Dred Scott refutes the notion that bans on bearing arms were the norm in the United States (or in any State). According to Dred Scott, American citizens have always had the right “to keep and carry arms wherever they went”—so recognizing blacks as citizens would mean recognizing their right to bear arms.