You’ll be rolling the dice either way. Here are your options:
1.) buy an existing rifle or build your own and make it compliant with current law as written. Spend as much, or as little as you want to accomplish this. Enjoy said rifle.
2.) don’t buy or build a rifle, save your money, see what happens with this bill.
If the bill doesn’t pass: enjoy your rifle until the next time a bill similar to this comes around and then we can all get anxious again
If the bill DOES pass, you’ve got 3 choices:
1.) sell your firearm to someone living in a free state. You’ll likely get less than half of whatever you invested into it since most of the buyers will know you don’t have much other choice, and because you pinned and welded items that they wouldn’t have had to do in their free state. This will be used against you in price negotiations. (Keep this part in mind when deciding how much to spend if you do indeed decide to buy/build something)
2.) turn your rifle into your local LEO office and be completely out of whatever amount of money you invested into it.
3.) choose not to comply. How you do so is up to you, some options are legal, some are not. Deal with any potential consequences you may, or may no, face.
I asked a similar question before and got my nuts handed to me. At the end of the day, all you need to remember are these two things:
1.) your choices are yours alone. Most of the people on here don’t actually have very good advice to offer one way or the other.
2.) I can absolutely promise you, hand to god, that not even one of the people on here that advises you to “not comply” will donate you even 1 dollar to your legal defense if you listen to them and get in trouble.
Best advice; contact a lawyer about what your options would be for storing your firearm out of state should the bill pass.
