http://www.ar500armor.com/ar500-armor-abdominal-ballistic-system.html

AR500 Armor® ABS was developed to satisfy the growing demand for modular protection of the abdominal area. We set out to create a modular auxiliary armor system that could integrate with your existing plate carrier and body armor.

Our Abdominal Ballistic System offers a unique blend of flexibility, modularity, and protection from rifles or pistols dependent upon the body armor insert you choose. AR500 Armor® ABS attaches via our unique pouch design, integrating into your plate carrier’s cummerbund flap or inner plate pocket. Secured via Velcro, or option modular attachment straps, ABS provides a natural fit with your existing body armor resulting in a user adjustable extension of your body armor.

Available in Level IIIA Soft, and level III Hard Body Armor.