Aluminum Construction for Unmatched Durability: Our HK iron sight buis are a class apart from the conventional polymer sights. Precision-machined from aircraft-grade aluminum, these spring-loaded sights are designed to endure. Whether mounted on a rifle or a shotgun, their robust construction guarantees a lifetime of reliable use, ensuring you\'re always on target. Fully Adjustable for Precision Shooting: Tailor your shooting experience with our fully adjustable rear and front pop-up iron sites. Equipped with sturdy dials, they offer seamless adjustments for windage and elevation, allowing for precision placement of every shot. The versatility is further enhanced by the ability to toggle between precision and CQB apertures, catering to a wide range of shooting scenarios. Effortless Installation on Any Picatinny Rail: These tactical rear and front sight are a breeze to install. Coming with an easy-to-use hex head screwdriver, they are designed to mount flawlessly on any Picatinny rail. Developed and manufactured to meet the stringent Ozarks standards of performance and reliability, these A2 sights are a testament to exceptional craftsmanship. Dual Aiming Aperture for Enhanced Accuracy: The rear sight of this exceptional duo features a dual aperture design, facilitating rapid and accurate target acquisition over varying distances. The addition of windage adjustment further refines your aiming capabilities, making these sights perfect for both short-range and long-distance shooting. In conclusion, our HK Iron Sights blend durability, adjustability, ease of installation, and precision aiming to provide a superior shooting accessory. Whether for sport, hunting, or tactical use, these sights are designed to elevate your performance and accuracy and our a must have airsoft rifle accessories tactical.