The Mako customizable free float quad rail allows users to add or remove rail sections as needed. Constructed of 6061 T6 Aircraft-grade aluminum and hard coat anodized black. The Mil-Spec picatinny rail sections can be mounted in 8 different locations on the tube. Does not require the removal of the front sight or delta ring for installation, drop-in, no gunsmithing required. Includes 3 thermal rail covers.