The Midwest Industries Handguard offers a simple installation which is a direct replacement for HK factory handguards. The Midwest Handguard features thirty seven full and seven half sides of M-LOK compatible slots, a one five slot Mil-Spec top rail, and four anti-rotation QD sling swivel sockets. This extremely lightweight handguard is constructed of rugged 6061 aluminum, hard coat anodized, and is a slim 1.6 inches in diameter for a great feel. Includes all tools for installation.NoteWill not work with CTME 308 rifles