The Magpul MAG583 M-LOK Aluminum Accessory Rail 9-Slot is designed to seamlessly attach to all M-LOK compatible hand guards and forends, providing a sturdy platform for mounting 1913 Picatinny spec accessories like lights, vertical grips, and more. Precision machined from milspec-anodized aluminum, this rail section ensures excellent strength and long-lasting durability. Its beveled ends minimize snagging and remove sharp edges for a sleek, low-profile setup. Measuring 4.1 inches in overall length with 9 usable slots, it comes complete with all the hardware needed for secure attachment to either aluminum or polymer M-LOK slots. Proudly made in the USA.