The GP Flap is an attachment for the Assault Back Panel Core, used to store extra operational gear, and it is not a standalone product.
It features a main pocket with half-zippered closure, Velcro loop lining, and two internal tie-downs for securing items, plus channels for linear items.
A smaller external zippered pocket and a 2" x 9" loop Velcro field for patches are also included, with attachment via dual zipper, snaps, and Velcro.