Congratulations (from a newbie).
Let me share the best two pieces of advice I received before I got married.
1. Marriage is one-third better than anything you ever imagined it could be, one-third worse than anything you ever feared it could be, and one-third about what you expected.
2. Being the husband means you have to go first. It means being the first to offer to make up after an argument - especially when you *know* you're right.
Oh, yes. You're making a promise to this young lady. As a man of honor, you must keep your promise.
OTOH, guns are already not a problem. I didn't buy my first until 3 years ago (right after the 2000 election). Then, she wasn't altogether thrilled with it. Now, she hardly ever lets me carry the Glock 30 I bought on 9/11/01.
Gen 2:18; Prov 18:22; Eph 5:25-33
"Not everyone believes what you believe!"
"My beliefs do not require them to."
Again, congratulations.