Product Description The Strike Industries GridLok Full Duty rail for the HK416/MR556/M27 IAR platform is built for fast, mission-driven configuration changes without sacrificing durability. Designed for law enforcement and special operations use, this one-piece free-float handguard uses a patent-pending Quick Rail Detach GRIDLOK locking latch and mounts directly to the factory HK OEM barrel nut for rapid swaps and easier access for adjustments or suppressor installation/removal. The Full Duty configuration provides a full-length 1913 Picatinny top rail, M-LOK accessory mounting at the 3, 6, and 9 o&&';;clock positions, and integrated QD swivel sockets for flexible sling setup. A built-in flip-up front sight adds capability without extra bulk, while the front cut is engineered to accommodate suppressors up to 1.57 inches in diameter. Product Highlights Quick Rail Detach GRIDLOK locking latch enables rapid handguard removal and reinstallation on the HK OEM barrel nut Full Duty design with full-length 1913 Picatinny top rail for optics and accessory alignment M-LOK slots at 3, 6, and 9 o&&';;clock for streamlined, modular accessory mounting Integrated features including flip-up front sight and four QD swivel sockets (2, 4, 8, and 10 o&&';;clock) Suppressor-friendly front cut supports up to 1.57" diameter cans and tucked muzzle device setups Specs Brand: Strike (Strike Industries) Manufacturer Part Number: GRIDLOK416FD16 UPC: 793811764741 Product Type: Free-float handguard / rail system Model: GridLok Full Duty with Quick Detach System Length: 16 in Suppressor Clearance: Up to 1.57 in diameter Color: Black Material: 6061-T6 aluminum Mounting Interface: M-LOK at 3, 6, 9 o&&';;clock; full-length 1913 Picatinny top rail QD Sockets: (4) integrated QD swivel sockets at 2, 4, 8, 10 o&&';;clock Sight: Built-in flip-up front sight Overall Width (flat-to-flat): 1.75 in (44.45 mm) Overall Height (bottom to top of Picatinny rail): 2.50 in (63.50 mm) Weight: 1 lb 6.3 oz Compatibility: HK416 / HK416 A5 / HK416 A7 / MR556 / M27 IAR (without ambidextrous sling attachment points) Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.