The Magpul MAG589 M-LOK Polymer Accessory Rail 3-Slot is designed to work with all M-LOK compatible hand guards and forends, offering a cost-effective way to mount 1913 Picatinny spec accessories like lights, vertical grips, and more. Constructed from Magpul’s proprietary reinforced polymer composite, this rail section delivers exceptional strength and durability while keeping weight to a minimum. It features beveled ends to reduce snagging and eliminate sharp edges, ensuring a smooth, streamlined profile. The kit includes all necessary hardware for direct attachment to M-LOK slots on both aluminum and polymer hand guards. Measuring 1.6 inches in length with three slots, it’s proudly made in the USA.