Designed for use with all M-LOK compatible hand guards and forends, including the popular AR-15 rifle, the M-LOK Polymer Rail Sections adapter provide a cost effective method of attaching various 1913 Picatinny-Spec rail-mounted accessories such as lights, vertical grips, etc. Injection molded from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight, our M-LOK Polymer Rail Sections also feature beveled ends to reduce snagging and eliminate sharp corners and edges. All hardware necessary for attachment directly to M-LOK slots on either aluminum or polymer hand guards and forends is included. 3-slot: 3 usable slots and a max overall length of 1.6" 5-slot: 5 usable slots and a max overall length of 2.5 in. Made in the USA.