There are three applicable questions:
1. is a state shut down mandated, if yes, go to 2, if no go to 3
2. if a state shut down is mandated, is a gun shop considered a critical business and thus exempt from the mandate. If yes, go to 3, if no, shut down.
3. is the well being and safety of the employees and customers enhance by shutting down? This is significantly impacted by whether or not the employees will be paid. The modified unemployment rules make people exposed and tested, or told by doctor to get tested can get immediate unemployment. Not so for everyone else.
Where I work, we are staying open for the benefit of the employees, as most will be 100% screwed if they lose their pay checks and will not be able to pay to keep their health insurance.
People working for the government or union shops are not subject to this stress and don't seem to get that most private sector employers are faced with this dynamic.