The Midland/Odessa Murderer may have used a homemade gun. He was a prohibited possessor under federal law. This offers one explanation for his firing at police officers during the traffic stop. As a prohibited possessor, in possession of a rifle, he would be subject to years in jail. The Wall Street Journal reports that authorities are investigating a person who may have made the rifle and sold it to the murderer. If the person knew the murderer was prohibited from owning firearms, the sale would be illegal. From the wsj.com: Law-enforcement officials said they have identified a person of...