1.METAL BUILT FOR EXCELLENT QUALITY: The K600 machine sights are made of aircraft-grade hardened aluminum alloy, providing outstanding sturdiness and durability. Its unique design ensures stability and accuracy for long time use, which is an indispensable quality accessory for your shooting activities. 2.FOLDING DESIGN, EASY TO CARRY: The folding design of this machine sight is not only convenient for you to save space when carrying, but also can be quickly unfolded when needed, ready for battle. The folding mechanism is sturdy and reliable, ensuring that you can quickly enter the battle state in critical moments. 3.Metal front and rear sights for precise shooting: the K600 metal front and rear sights ensure that you can clearly and accurately lock on the target when aiming. Whether you are shooting from a distance or in close combat, it can provide you with excellent aiming performance and help you realize accurate shooting easily. 4.20MM RAIL COMPATIBLE, EASY INSTALLATION: This machine sight is compatible with 20mm rail, the installation process is simple and convenient. You can easily install it on your rifle or other firearms and enjoy the shooting fun without complicated adjustment and calibration.