Metal adapter dedicated to observation spotting scopes, binoculars and scopes with an objective lens diameter of 42 mm.

The FN adapters are compatible with the Pulsar Forward F135 / FN135, F155 / FN155 digital night vision attachments as well as the new Forward F455 / FN455 models.

Set includes: adapter, flip-up cover, allen key, reduction rings (mm): 45,5, 46, 46,5, 47, 48, 49, 50