Complex sentence: 'Big Gun' battlers have the annual event known as the North American Big Gun Open (NABGO), and-since 2008-the annual Big Gun Robotic Warship Combat open invitational at California Maker Faire.
Split into simpler sentences: 'Big Gun' clubs have the annual event known as North American Big Gun Open (NABGO),. Since 2008-the annual Big Gun Robotic Warship Combat open invitational at California Maker Faire.