Watchtower Firearms S7M Super Lite Handguard AR-15 5 in Picatinny Rail Type II Anodized Black. A strong high-grade billet aluminum on-piece system with a full length 1913 picatinny rails up to 4 QR sling points and M-LOK mounting slots at 36 and 9 oclock. This basic tactical and suggest handguard is also available in three different lengths and is a perfect solution to adding on aftermarket AR accessories. Specifications for Watchtower Firearms S7M Super Lite Handguard: Manufacturer: Watchtower Firearms Color: Black Finish: Type II Anodized Fabric/Material: High-Grade Billet Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Handgun Handguard Length: 5 in Handguard Type: Free-Float Handguard Style: Hybrid Rail Gun Rail: Picatinny Gas System Length: Rifle Length Weight: 6.03 oz Inner Diameter: 1.55 in Mount Type: M-LOK Features of Watchtower Firearms S7M Super Lite Handguard 1 piece free float design; 1.55in inside diameter; Anti-rotation mounting system; Black - type II anodized; M-LOK bottom mount side rail mounts and 45 degree mounts; WATCHTOWER 100percent product guarantee; Package Contents: Watchtower Firearms S7M Super Lite Handguard Aluminum barrel nut Mounting hardware Watchtower Firearms S7M-5-BLK: S7M Super Lite Handguard AR-15 5 in Picatinny Rail Type II Anodized Black