I think in this case, the press might actually have it right:
NASHVILLE, Tenn. (AP) â€” A man carrying an AK-47-style semiautomatic pistol was detained at Radnor Lake State Park after startled hikers complained to park rangers.
Ellen Thomas told WSMV-TV she was hiking an upper trail on Sunday when she encountered 37-year-old Leonard Embody wearing a camoflauge jacket, military boots and a black skull cap. She called the encounter “scary.”
Turns out they are trying to find out if the weapon is legal, but I don’t see why it wouldn’t be. I’m going to guess it’s one of these, or something very similar. Looks like one of those cases where the police just can’t believe the activity was legal.