Burn Proof Gear Rail Rap Heavy Black 6x1.75. You can also use the Heavy model on your M-Lok / slim rails and it will cover the entire handguard including the top picatinny rail. Specifications for Burn Proof Gear Rail Rap Heavy: Manufacturer: Burn Proof Gear Fabric/Material: Berry Amendment Fabrics Length: 6 in Included Accessories: Standard Condition: New Diameter: 1.75 in Features of Burn Proof Gear Rail Rap Heavy Cable management; Hand positioning reference point; Soft point of contact for your rail on a hard surface; Reduces heat mirage from rail and barrel to keep your optics visibility clear; Eliminates the need for gloves which rip or get lost often; DuPont Kevlar TEX-80 thread DuPont Kevlar Bungee cord rated to 800 F Package Contents: Burn Proof Gear Rail Rap Heavy Burn Proof Gear BPG-RR-H-BLK: Rail Rap Heavy Black 6x1.75