The Marble Arms .410" Glow 41-W fiber optic front sight features durable steel construction with a bright orange fiber optic insert for enhanced target acquisition and accuracy.Marble Arms Glow 41-W Front Sight.410" specification for precise fitmentSteel construction for durability and reliabilityOrange fiber optic insert for improved visibilityDesigned for rifle applicationsIdeal for hunters and sport shooters seeking improved sight picture and faster target acquisition in various lighting conditions.