The 
NUPROL NP 50mm Sunshade
 is a metal accessory designed to screw onto compatible 50mm objective lens optics to reduce glare and improve clarity
 
Product Information & Features
The 
NUPROL NP 50mm Sunshade
 is an accessory for riflescopes, primarily used in airsoft for its functional and aesthetic benefits. 
Material: It is constructed from an alloy metal with a black finish.
Function: The sunshade works by limiting the amount of ambient light that enters the objective lens, which significantly improves sight picture clarity on sunny days and reduces "sun dazzle" or glare.
Protection: It offers some minor protection for the optic lens from incoming airsoft BBs by restricting the field of impact. For complete protection, NUPROL recommends using a Killflash or Lens Shield in conjunction with or instead of the sunshade.
Compatibility: The shade is designed for optics with a 50mm objective lens diameter and features threads on both ends, allowing for sequential attachment (stacking) or the addition of a compatible killflash.