The Geissele Automatics 05650S Super Modular Rail MK16, measuring 13.50 inches and crafted from durable Desert Dirt aluminum, is engineered for the most demanding shooters who require both performance and reliability on their AR platform. This innovative rail system is mounted using an updated version of the proven Geissele Barrel Nut design, ensuring easy installation and maintenance while providing superior rigidity that withstands the rigors of intense use. With anti-rotation tabs and set-screws, the MK16 guarantees that your rail remains securely in place, even under extreme conditions. The inclusion of a M1913 picatinny rail on top, along with M-LOK slots on every quadrant, allows for maximum customization, enabling you to attach a wide range of accessories to enhance your shooting experience. Precision machined from 7000 Series Aluminum, the rail is not only lightweight but also incredibly strong and rigid, finished with a Type-3 Hardcoat anodized surface that ensures durability and resistance to wear. Whether you are a competitive shooter, a tactical operator, or a dedicated enthusiast, the Geissele Super Modular Rail MK16 is designed to elevate your firearm's performance while providing the versatility needed for any mission or shooting scenario.