Magpul M-LOK Polymer Rail Section 11 Slot For M-LOK Compatible Systems This 11 Slot Polymer rail will facilitate mounting Picatinny rail furniture to M-LOK Platforms Designed for use with all M-LOK compatible hand guards and forends, our 11-slot M-LOK Polymer Rail Sections 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. 11 usable slots and a max overall length of 4.9". Made in the USA.