BB guns are a type of
air gun designed to fire spherical projectiles similar to
shot pellets of approximately the same size. Modern BB guns usually have a
barrel with a bore and caliber of and are available in many varieties. BB shot for modern BB guns is usually
steel, plated either with
zinc or
copper to resist corrosion, and measure in diameter. Some manufacturers still make
lead balls of slightly larger diameter and which are generally intended for use in
rifled BB gun barrels.