Nail Gun Massacre

The name of this movie is Nail Gun Massacre released in 1985-12-16 and it's main theme is Following the brutal rape of a young woman by a gang of construction workers, a mysterious figure wearing a motorcycle helmet and driving a gold hearse begins hunting the perpetrators down. The masked avenger's weapon of choice, obviously, is a nail gun, with which he or could it be she? takes out the rapists one by one. Just who is this murderous vigilante?.