Check the listing for details. Fiber Optics Iron Sights Flip-up Front and Rear Sights 45 Degree Offset Tactical. Color: Black, Condition: New. Listed at 16.99 USD. Windage Adjustment Without Tool Turn the knob to adjust the windage and align your aim accordingly. Front Sight Moving Up and Down Front sight elevation can be ajusted by Turn the knob. Easy to Install Install the lock with a hex wrench(the big one） Easy to Install Install the lock with a hex wrench（the small one） Feature: New Version Iron Sight: The 45 Degree Offset Iron Sights are designed with flexibility in mind, featuring both red and green fiber optic dots for accurate targeting without taking up valuable accessory space or interfering with optics. Allows you to slightly rotate your weapon to witness target through them and engage. Flip-Up Design: Spring loaded flip up feature. A simple press of the button and your sights will pop up quickly and remain stable for quick transition between iron sights and scopes. User-Friendly: The sight set is designed to be intuitive and user-friendly, suitable for both left and right-handed shooters. Enjoy seamless transitions between long-range target engagement and closer target acquisition with ease. Universal Compatibility: The Offset Iron Sights are compatible with standard picatinny mounting systems, and are fully adjustable for windage and elevation with no tools required. Plus, they offer a low profile when folded down. High-Quality Construction: Made from aviation-grade aluminum alloy with a black matte finish, these iron sights are designed to be both sturdy and durable. Trust in their quality craftsmanship for reliable performance shot after shot. Simple Rail Installation: Utilizing an Allen key, effortlessly attach the iron sight to a 20mm standard rail. It provides the flexibility to be mounted on either the left or right side according to preference. Specification: Color: Black Material: Aluminum alloy steel Size: As picture shown Aiming method: Fiber optic Applicable guide Rail: 20mm picatinny Folding method: Spring pressing Adjustment: Windage elevation Package included: 1 Pair* 45° Fiber Optics Iron Sights 2* Wrench