A bullet-resistant back extender includes an armor carrier having an inner pocket with a bullet-resistant ballistic panel disposed within the inner pocket and an upper portion of the armor carrier having a fastener to attach the bullet-resistant back extender to a fastener in a bullet-resistant vest...http://www.google.es/patents/US7748053?utm_source=gb-gplus-sharePatente US7748053 - Bullet-resistant back extender