March Scopes 41mm Eyepiece Flip Caps Black. Having the caps lay flat again the scope body prevents breakage and gives the shooter a better view of the target area from over the scope. Specifications for March Scopes 41mm Eyepiece Flip Caps: Manufacturer: March Scopes Objective Lens Diameter: 41 mm Finish: Type 3 Hard Coat Anodizing Fabric/Material: 7075 Aluminum Color: Black Fit: Universal Country of Origin: Japan Gun Make: Universal Gun Type: Rifle Gun Model: Universal Package Contents: March Scopes Eyepiece Flip Caps What firearm models does the manufacturer say March Scopes 41mm Eyepiece Flip Caps is compatible with? The manufacturer says that March Scopes 41mm Eyepiece Flip Caps is compatible with UniversalMarch Scopes FC-41: 41mm Eyepiece Flip Caps Black