well i have a mossberg 590a1 and i upgraded to a hogue grip
so i have the factory mossberg grip that includes a sling stud.
if you pay the shipping its yours.
if you need pics i can take some but its just a factory mossberg plastic pistol grip
it will fit the 500 590 590a1
i do NOT have the screw but im pretty sure it can be ordered for cheap from mossberg