Fortunately, it's a bit more than that. The "guidance" is to just clarify what is included. Critical infrastructure designation is federal law codified in 42 us code 5195. After being included in the guidance, NJ gun stores and ranges will be open by Monday (not sure about timing but Mon or Tues at the latest) per federal law. Phil Murphy has no say in the matter
Then, stuck in the middle are people like me: I just received an FID card and two permits to purchase about a week before everything got shut down. I applied many months before I had ever heard the term "Coronavirus." The gun I ordered is at the store ready for pickup, but of course I can't go pick it up. So if this shutdown continues past the expiration date of my permits, then what? I called the police station and they're not taking visitors from the public now to process renewals. My permit could theoretically expire and I won't be able to use it?