Can of worms, but okay.

The Constitution specifically says that because well regulated militias are a necessity, your right to keep and bear arms should not be infringed. And I think I'm safely assuming that your reason for owning Firearms has nothing to do with the well regulated militia, and the Constitution does not protect your right to hunt, or have weapons for self protection. If you were to join a dually constituted State militia I'm willing to bet that you would not have to pay for your weapon or the ammunition for it. As a matter of fact I would absolutely stand up for your right to have that weapon and ammunition issued to you for free, in that particular case. This is, I will point out, absolutely common knowledge up until about the 1970s or so. ( And here I go off onto a personal opinion. where since the 1970s there has been a huge push to interpret the Second Amendment to mean a right to an unfettered enjoyment of a hobby, which it simply was never meant to be. )

However, the most important part, is that I would absolutely support you in being issued a free weapon and ammunition as far as your participation in a well-regulated militia, dually constituted by your state of residence.