Keymod Handguards for the AR15/M4 Platforms. Easy Drop-In install, no special gunsmithing involved, fit into Delta Ring and front Handguard Cap. Remove factory handguard, drop in the KeyMod handguards and use supplied screws to secure KeyMod handguard in place. Solid fit, top rail is at receiver height and you have 7 angles of KeyMod slots. Black Anodized Aluminum Construction.