DoubleStar Cloak M-LOK Handguard Free Float 15.5in Black. The slim lightweight profile makes it comfortable for any shooter. The Cloak features two QD swivel pockets and MLOK slots on 6 sides making it as versatile as you need. It was designed with two anti-rotation tabs to fit tightly with your mil spec receiver. The Cloak was designed to work with Mil Spec receivers. Customers with billet receivers will need to be sure the anti rotation tabs will clear the receiver. It WILL NOT work with Gas Piston systems. Specifications for DoubleStar Cloak Free Float M-LOK Handguard: Manufacturer: DoubleStar Color: Black Finish: Hard Coat Anodized Fabric/Material: 6061-T6 Aluminum Gun Make: AR Platform Gun Model: AR-15 Handguard Type: Free-Float Gun Rail: M-LOK Included Accessories: Standard Inner Diameter: 1.3 in Outer Diameter: 1.55 in Mount Type: M-LOK Quantity: 1 Features of DoubleStar Cloak Free Float M-LOK Handguard Free floating Integrated anti-rotation tabs Package Contents: DoubleStar Cloak Free Float M-LOK Handguard DoubleStar DS423: Cloak M-LOK Handguard Free Float 15.5in Black