When the plaintiff has alleged an intention to engage in a course of conduct arguably affected with a constitutional interest, but proscribed by a statute, and there exists a credible threat of prosecution thereunder, he should notbe required to await and undergo a criminal prosecution as the sole means of seeking relief.
The only difference between that harm and the harm alleged in this case is that there it was to First Amendment interests, here to Second. I know of no hierarchy of Bill of Rights protections that dictates different standing analysis.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.