Custom Armor Group Bungee - Helmet Accessory Green. Features of Custom Armor Group Bungee - Helmet Accessory CAG's Bungee System for ACH/MICH Rails and Shroud System provide needed support and stabilization for the NVG mount of your choice. Package Contents: Custom Armor Group Bungee - Helmet Accessory Custom Armor Group BNG-GR: Bungee - Helmet Accessory Green