So I bought an mp15 a few days ago, and was shooting a little tonight at my uncles. Where we always shoot. Shotguns, pistols, but the first time something like an ar has been fired there. My uncle has about an acre at the end of a dead end road. There is a dirt pile against the woods line. We fire to the south. the next 3 houses to him r family. About 700 yards to the north west is a park. 500 yards to the west through the woods is a home. Is it legal to fire my mp15 in this location?