The brother of James Earl Ray is battling a museum for possession of the rifle believed to have been used to kill the Rev. Martin Luther King Jr.

Jerry Ray said his late brother left everything to him."I'm just following James Earl Ray's last will and testament," he told WTVF-TV on Wednesday. "He made me executor of his will, and everything he owns I get."

Ray, who filed papers in probate court to finalize the will, said he wants the .30-06 hunting rifle so more tests can be done to try to clear his brother's name.

But the National Civil Rights Museum in Memphis said it is entitled to the gun because of a state law passed three years ago.