Yes, you can purchase a firearm with a suppressor in Pennsylvania. There are some specific regulations that you need to be aware of, but in general, the process is relatively straightforward.
First and foremost, you need to be a resident of the state of Pennsylvania. Non-residents are generally not permitted to purchase firearms within the state. You will also need to have a valid photo ID and pass a background check.
When it comes to the actual purchase of the firearm, you have two options. You can either buy it from a licensed dealer or a private individual. If you choose to go through a dealer, they will handle all of the paperwork for you. However, if you purchase from an individual, you will need to submit an Application to Transfer Firearms and pay the associated fees.
Once you have the gun, you will need to register the suppressor with the Pennsylvania State Police. This can be done either online or through the mail. You will need to provide information such as your name, address, make, model, and serial number of the suppressor.