This is a Magpul Industries Accessory known as the MOE Cantilever Rail Section, model MAG437-BLK.
Designed for use with MOE Hand Guards and Forends" the MOE Cantilever Rail allows the attachment of various 1913 Picatinny spec rail-mounted lights in a cantilever forward position. Injection molded from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight" the Cantilever Rail also feature beveled ends to reduce snagging and eliminate sharp corners and edges. All hardware necessary for attachment directly to integral mounting slots on MOE(R) Hand Guards and Forends is included. Made in U.S.A.
Features:
For use with MOE Hand Guards and Forends
Enhanced strength and durability
Beveled ends to reduce snagging and eliminate sharp corners and edges
