MEDFORD (AP) — A registered medical marijuana grower was sentenced Monday to 10 years in federal prison for conspiring to sell his crop illegally and for having machine guns and other illegal firearms. Jason Michael Scott Nelson, owner of a Grants Pass bike shop, admitted taking advantage of the Oregon Medical Marijuana Program out of greed and apologized to his family, the judge and the prosecutor for his lies. “I was out of control,” Nelson said in U.S. District Court, adding that even after his arrest he tried to grow more marijuana and sell it to “keep myself afloat.” Authorities …