Share 'According To Friend, DJ Megatron Was Out Copping Chronic When He Was Killed'

  The hip-hop DJ murdered near his Staten Island home over the weekend was out on a pot-buying run and talking to a pal on the phone when he was gunned down, law-enforcement sources revealed yesterday. Corey McGriff, a k a DJ Megatron, was chatting with a friend, telling him he was buying marijuana, at 2 a.m. Sunday when the line suddenly went dead, a source said. The pal, who was not identified…