ISC Internal Scope Cap Version 2 w/ Nightforce 50mm Adapter Black Large 100-0007-005. With this Internal Scope Cap Package shooters who prefer the look of a quick release plate will find everything they need to convert any of their current scopes to the newer style ISC-V2 with 50mm adapter Package. Including the large A ring base that can be used on any of the ISC-V2 compatible rifles. So if you are in the market for a new scope and want to retain the same look and performance then this is the package for you Specifications for ISC Internal Scope Cap Version 2 w/ Nightforce 50mm Adapter: Manufacturer: ISC Color: Black Size: Large Objective Lens Diameter: 50 mm Features of ISC Internal Scope Cap Version 2 w/ Nightforce 50mm Adapter Can be interchanged with Large A Ring Package for these scopes Package Contents: ISC Internal Scope Cap Version 2 w/ Nightforce 50mm Adapter ISC 100-0007-005: Internal Scope Cap Version 2 w/ Nightforce 50mm Adapter Black Large