The Hazard 4 Frontline Assault Chest Rig is available now at the Military 1st online store.. It is a chest rig laden with pouches for magazines and other essential gear... "The Hazard 4 Frontline Assault is a complete tactical chest rig. It is made of sturdy and water-repellent Invista 1000D Cordura, with a set of sewn-on pouches to carry mags, med-kit, radio and MREs.