Feyachi S37 Fiber Optic Flip Up Iron Sights with Red Green Dots, Tool-Free Adjustment, Rail Mount Rapid Transition Backup Sights Fiber Optic Highlights: The Feyachi S37 Fibre Optic Iron Sights feature red and green fibre optics to improve visibility and target acquisition in a variety of lighting conditions, making aiming quick and easy, especially in low light. Flip-Up Design: The Feyachi S37 flip-up iron sights are designed for quick folding and unfolding. With a simple button press, the Feyachi S37 Flip-Up Iron Sights easily fold down and can be manually flipped up when needed (no spring-assisted popping up). Comes with a hex wrench for easy installation and position adjustment, suitable for Picatinny and Weaver rails. Dual Aperture Options: The rear sight of the Feyachi S37 Fibre Optic Iron Sights features dual apertures, suitable for both long and close range shooting.With two aperture options available, the Feyachi S37 Sights enable a smooth transition from close-quarters CQB target acquisition to precise long-distance aiming. The windage angle can be adjusted using the side knob. Sturdy Construction: The Feyachi S37 Fiber backup sights are crafted from a lightweight aluminum alloy with a durable anodized finish. It has undergone rigorous oxidation and impact testing to ensure durability and wear resistance. Ease of use:The Feyachi S37 sights are easy to use, with the red dot on the front sight continuously adjustable by sliding the elevation knob. For precise adjustment of the green dot on the rear sight, simply use the windage knob to move it left or right as needed. Feyachi S37 sights also come with a 12 month warranty. UPC 665386536712 ASIN B0CZ3JVWM5 Color black Brand Name Feyachi Model Name Feyachi5137_VC Sport Type Airsoft Item Weight 3.5 Ounces Manufacturer Feyachi Model Number Feyachi5137_VC Night vision No Reticle Type Red Green Dot Material Type 6061-T6 Aluminium Alloy Mounting Type Weaver Mount Product Style 90 degree Item Type Name Feyachi5137_VC Compatible Devices Firearms and Airsoft Guns Included Components 1 x Front Sight,1 x Rear Sight,1 x Hex Wrench Warranty Description one year warranty Manufacturer Part Number Feyachi5137_VC