Of course there is....but that's besides the point, since its simply a question. The law abiding , would comply.....that's what makes them law abiding. And since its not an effort to try and ban or abolish someone's 2nd amendment rights, I don't see what the problem is.
So, let me ask it again, since you seem to find the need to rant about the notion of all these firearms living beyond their years, when their owner dies....Would you support a law that when a person passes away, any firearms he legally owns, gets automatically transferred to the trustee, or next of kin, or Power of Attorney, or designated person(s) in a will?? And if for whatever reason that person is not lawfully allowed to own a firearm, then the weapon must be sold to a dealer or another person legally able to own a firearm. Hell, it could even be donated to the police or sheriff's dept. And there'd be a time frame for this to occur. That's a far more credible & passable law than trying to ban firearms. Would you not support such an effort??