Armortek Security Case (Shotgun or AR-15 Size) Case-Hardened 6 Gauge Steel Band - Around top and bottom perimeter for extra strength and protection. Steel Guards and Receivers - Receivers accept steel guards around the perimeter of the case. Unique Lock Loop - Accepts zipper tabs, steel cable and padlock to securely lock case. Molded Plastic Shell - with Ballistic nylon cover. Steel Mesh - Lined at top and bottom with 13 gauge steel mesh to prevent cutting. Dense Velour-Covered Memory Foam - Molds around valuables to prevent movement inside case.