The Magpul RVG M-LOK Adapter Rail is a polymer M-LOK accessory rail that is optimized for the attachment of the Magpul RVG to all M-LOK compatible hand guards and forends. Molded of the same high quality material as other Magpul Polymer Rails"" the RVG M-LOK Adapter Rail has the same footprint as the RVG and lower profile than a standard Picatinny Rail to ensure a seamless transition between the different components. All hardware necessary for attachment directly to M-LOK slots on compatible aluminum or polymer hand guards and forends in included. 2 Slots"" max overall length of 1.9"". Made in U.S.A.