A method of fabricating a contoured composite stiffener comprising multiple assembled components (50, 52, 54), the method comprising: assembling a composite charge, including laying up at least one composite ply, for each component of the multiple assembled components (50, 52, 54); rolling the composite charges onto a roll; transporting the roll having the composite charges thereon to a forming station including a reconfigurable forming mandrel; for each of the composite charges: configuring a shape of the reconfigurable forming mandrel to substantially match a contour of the composite stiffener; configuring a reconfigurable former to substantially match the contour of the composite stiffener; placing the composite charge on the reconfigurable forming mandrel, including unrolling the composite charge from the roll at the forming station; forming the composite charge on the reconfigurable forming mandrel, wherein forming the composite charge on the reconfigurable forming mandrel is performed using the reconfigurable former, and configuring the shape of the reconfigurable forming mandrel includes: adjusting a reconfigurable mandrel support to generally match the contour of the composite stiffener, loading the reconfigurable forming mandrel onto the reconfigurable mandrel support, and configuring the shape of the reconfigurable forming mandrel to substantially match the contour of the reconfigurable mandrel support; and transporting the reconfigurable forming mandrel having the formed composite charge thereon to an assembly station; and assembling the formed composite charges, corresponding to the multiple assembled components (50, 52, 54), at the assembly station to form the composite stiffener. assembling a composite charge, including laying up at least one composite ply, for each component of the multiple assembled components (50, 52, 54); rolling the composite charges onto a roll; transporting the roll having the composite charges thereon to a forming station including a reconfigurable forming mandrel; for each of the composite charges: configuring a shape of the reconfigurable forming mandrel to substantially match a contour of the composite stiffener; configuring a reconfigurable former to substantially match the contour of the composite stiffener; placing the composite charge on the reconfigurable forming mandrel, including unrolling the composite charge from the roll at the forming station; forming the composite charge on the reconfigurable forming mandrel, wherein forming the composite charge on the reconfigurable forming mandrel is performed using the reconfigurable former, and configuring the shape of the reconfigurable forming mandrel includes: adjusting a reconfigurable mandrel support to generally match the contour of the composite stiffener, loading the reconfigurable forming mandrel onto the reconfigurable mandrel support, and configuring the shape of the reconfigurable forming mandrel to substantially match the contour of the reconfigurable mandrel support; and transporting the reconfigurable forming mandrel having the formed composite charge thereon to an assembly station; and configuring a shape of the reconfigurable forming mandrel to substantially match a contour of the composite stiffener; configuring a reconfigurable former to substantially match the contour of the composite stiffener; placing the composite charge on the reconfigurable forming mandrel, including unrolling the composite charge from the roll at the forming station; forming the composite charge on the reconfigurable forming mandrel, wherein forming the composite charge on the reconfigurable forming mandrel is performed using the reconfigurable former, and configuring the shape of the reconfigurable forming mandrel includes: adjusting a reconfigurable mandrel support to generally match the contour of the composite stiffener, loading the reconfigurable forming mandrel onto the reconfigurable mandrel support, and configuring the shape of the reconfigurable forming mandrel to substantially match the contour of the reconfigurable mandrel support; and adjusting a reconfigurable mandrel support to generally match the contour of the composite stiffener, loading the reconfigurable forming mandrel onto the reconfigurable mandrel support, and configuring the shape of the reconfigurable forming mandrel to substantially match the contour of the reconfigurable mandrel support; and transporting the reconfigurable forming mandrel having the formed composite charge thereon to an assembly station; and assembling the formed composite charges, corresponding to the multiple assembled components (50, 52, 54), at the assembly station to form the composite stiffener.