Strike Industries Full Duty Gridlok 416 9in Handguard - The Strike Industries GRIDLOK 416 Full Duty Handguard Assembly delivers a lightweight, durable upgrade for HK 416 and M27 IAR platforms. Precision-machined from a single piece of FWA 6061 aluminum, it features patented Quick Rail Detach (GRD) technology for fast field removal and reconfiguration. Designed for mission adaptability, the GRIDLOK supports multiple lengths and accessories, including backup sights, allowing you to customize your setup for any operational need. Features Mounts quickly and directly on HK OEM barrel nut; Quick Rail Detach GRIDLOK locking latch; Specifically designed for Law Enforcement and Special Operations communities; Law Enforcement and military users can quickly swap rails for specific missions; Quickly remove and reinstall rail; 1pc free float handguard design to minimize weight and increase strength; Builtin flip up front BackUp Iron Sight; MLOK rail system at 3, 6 and 9 oclock positions for accessory mounting options; Integrated 360 free swivel QD socket at rear of handguard at 2, 4, 8 and 10 oclock positions; Rear rail tab to help index into HK upper receiver; Handguard machined from 6061T6 aluminum;