Keep the objective of your Nightforce 56mm ATACR, Beast, and NXS clear with these objective flip-up lens caps. The new lens caps, manufactured to Nightforce specifications by Tenebraex, provide both superb protection and extreme functionality in the field. For the riflescope’s objective lens, an adapter screws into the objective’s threads; for the eyepiece, the adapter clamps on. The caps themselves then securely lock into place onto the adapters. Both caps flip up with finger pressure. Once open, the caps can be locked into place with slight backwards pressure.