The slimmed-down adapter of Smartclip AS is specially designed for attaching night vision and thermal camera adapters to optical scopes. The precise manufacturing process guarantees optimal attachment of the adapter to the scope. The locking tab on the side ensures that the adapter does not slide on the tube of the scope. Features: Made of extremely stable aviation aluminum With a particularly quiet strap for mounting in the forest Rounded edges for easy installation Thanks to the side lock, it is easy to notice if the adapter is not properly fixed Required distance from the rifle: min 3 mmAvailable sizes: 30mm, 36mm, 40mm, 48mm, 49mm, 50mm, 52mm, 54mm, 56mm, 57mm, 58mm, 59mm, 60mm, 62mm, 63.5mm, 64 mm, 65 mm (measured to scope outer tube diameter) Important: To connect this adapter to the Pulsar Core or Krypton, you need the Smartclip PMC52 Converter for Core (Item No. SC00100) or the Smartclip Converter PK52 / 351 for Krypton (item no. SC00101). The FN455 Forward can be connected to this AS adapter with the PF4 converter (SC00103).