NightForce ATACR Rifle Scope Objective Flip-Up Lens Caps 50mm. E.A.S.T. and full-size NXS Rifle Scopes. These Rifle Scope Accessories from NightForce flip open easily and can be adjusted to provide the opening angle you prefer. NightForce Rifle Scope Tactical Flip-Up Lens Caps are custom designed to lock into place once open for unobstructed sighting. Protect your investment in quality glass from moisture dust and scratching with NightForce Rifle Scope Custom Flip-Up Lens Caps. Please note this is for the Objective lens of your riflescope and NOT sold as a set. Specifications for NightForce ATACR Rifle Scope Flip-Up Lens Caps: Manufacturer: NightForce Objective Lens Diameter: 50 mm Fabric/Material: Plastic Color: Black Condition: New Fit: 50mm ATACR Features of NightForce ATACR Rifle Scope Flip-Up Lens Caps: Thread-in attachment method Full Objective lens protection Stay closed design Spring loaded to flip open and stay open Rotational so the cap is where you want it Nightforce Medallion Branding Package Contents: NightForce ATACR Rifle Scope Flip-Up Lens Caps NightForce A471: ATACR Rifle Scope Objective Flip-Up Lens Caps 50mm