Badger Ordnance Condition One Angle Cosine Indicator w/Mount Kit Black. It can be used on any C1 mount left/right fore/aft though end users will need to purchase right or left handed ACIs accordingly as the ACI design itself is not ambidextrous in nature. Specifications for Badger Ordnance Condition One Angle Cosine Indicator Mount: Manufacturer: Badger Ordnance Fabric/Material: 7075-T6 Aluminum Included Accessories: Mount Kit Package Contents: Badger Ordnance Condition One Angle Cosine Indicator Mount Badger Ordnance 200-20BA: Condition One Angle Cosine Indicator w/Mount Kit Black