Nightforce Eyepiece Flip-Up Lens Cap - NX8 8x, NXS 4x A539 is a precision-engineered accessory manufactured by Tenebraex, designed to fit Nightforce NX8 8x, NXS 4x, and NXS 10x riflescopes. This flip-up lens cap protects your eyepiece from dust, moisture, scratches, and impact, ensuring clear and reliable optics in demanding conditions. Its spring-loaded design allows quick one-handed operation, making it an essential addition for shooters who need fast access to their scopes without compromising protection. Constructed from military-grade, high-impact polymer, the Tenebraex lens cap offers excellent durability and lightweight performance. Engineered to withstand extreme temperatures from -40°F to +160°F, it provides reliable protection in harsh environments ranging from freezing cold to desert heat. The cap securely locks in both open and closed positions, safeguarding your valuable Nightforce optics while maintaining easy accessibility in the field. Nightforce Eyepiece Flip-Up Lens Cap - NX8 8x, NXS 4x A539