Justice Alito wrote an amazing decision. Using the congressional laws leading up to the 14th amendment, and the congressional debate over both those laws and the 14th amendment, he built a solid foundation for the 2nd amendment being covered under the 14th. He also brilliantly argued how the 2nd can't be separated or treated differently from other "fundemental rights" (a term used something like a dozen times in his decision). Additionally, his comments on the racist history of gun control and the impact of the Chicago law on minorities was cutting.
As someone else on this board said, Alito tore Chicago a new A$$h0le from their knees to their scalps.