Fleming was charged with a range of offences including kidnapping, firing a firearm at a dwelling or house with disregard to safety, firing a firearm in a manner likely to injure and possessing a prohibited firearm.
He was refused bail to appear at Wollongong Local Court today.
Police will allege a search of his resident uncovered a Nazi flag, two unsecured firearms, military knives, a police uniform, five gel blaster firearms and six other replica handguns.
The 40-year-old sparked a massive police response as he allegedly fired at cars and people along Windang Rd.
Within minutes of the shots being fired, the elite Tactical Operations Unit, bomb disposal unit and negotiators were on their way to the suburb.