If you really look hard, Biden is NOT targeting gun owners as a whole, only those who newly go to purchase assault style weapons. It is thought that the NRA is an evil association, that the NRA wants to take away our guns, but that just isn't true.
The NRA is in favor of making changes that make it harder to buy guns, like universal background checks and adding a mental health check into the mix. That's not to say that we shouldn't be aware of what is going on.
In closing, Biden won't take away our guns, he'll just make it more difficult for prospective new owners to acquire them.