The Mission First Tactical TEKKO AR-15 Drop In Rail system is designed to replace your factory plastic carbine factory hand guards in just a number of minutes. The great thing about the TEKKO drop in hand guard is that it does not require any special tools, or a gunsmith to complete. You can complete this upgrade easily and the best part is that no permanent alterations need to be made to the firearm. This particular version of the TEKKO drop in hand guard features an M-LOK compatible rail system perfect for mounting your favorite M-LOK compatible accessories. This TEKKO hand guard is made from polymer and features a matte black finish.