Rifle

A Double-barrelled shotgun was bought by Vernon Dursley in Harry Potter and the Philosopher's Stone. While searching for a new place to stay for a while to escape Harry's relentless letters, he pulled over at the coast and bought some rations and something in a long thin package, he never told them it contained a shotgun.

Later, when Rubeus Hagrid burst into their hut at sea, Vernon showed up, at aim with his shotgun and ordered the giant to leave, but Hagrid casually told him to "dry up" and simply bent the barrels of the gun upwards, causing Vernon to discharge the shotgun into the ceiling.