Designed for use with all M-LOK compatible Hand Guards and Forends, our M-LOK Aluminum Rail Sections (7 Slots) allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from Mil-Spec-anodized aluminum, M-LOK 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. 7 Slots, max overall length of 3.3". Made in U.S.A.