Trooper Rick Roberts and the Anchor Point Volunteer Fire Department responded and the boy, whose name has not been released, was transported to South Peninsula Hospital.
The accidental discharge of a firearm is a common mishap in Alaska, trooper Sgt. Jim Hibpshman said.
"I think most gun owners are responsible. They don't want kids to get a hold of their firearms," he said. "But if they're not secured in a gun locker, it happens. And in this state, where a lot of people own guns, it happens on a fairly frequent basis."
Because Alaska has no laws requiring gun owners to keep their firearms locked up, no charges were filed, though Hibpshman said in cases of gross negligence, people could be charged with reckless endangerment of a child.