The Strike Industries GridLok Full Duty handguard (brand part no. GRIDLOK416FD16) is built for the HK416, HK MR556, and M27 IAR platform, giving law enforcement and special operations users a fast, tool-minimal handguard swap over the factory HK rail. Measuring 16 inches long by 1.57 inches in diameter and machined from black aluminum with M-LOK slots, it mounts directly to the factory HK OEM barrel nut using Strike Industries’ patent-pending Quick Rail Detach GRIDLOK locking latch. That quick-detach system lets you swap between a primary and secondary handguard setup in seconds, so you can run the GRIDLOK as your primary rail and keep the factory HK rail on hand as a secondary.

Key Specifications

• Measures 16 inches in length and 1.57 inches in diameter.
• Machined from black aluminum with M-LOK attachment slots.
• Uses Strike Industries’ patent-pending Quick Rail Detach GRIDLOK locking latch.
• Mounts directly onto the factory HK OEM barrel nut.
• Allows a primary/secondary handguard swap in seconds without extra tools.
• Compatible with the HK416, HK416 A5, HK416 A7, MR556, and M27 IAR.
• Built without ambidextrous sling attachment points.

Frequently Asked Questions

What platforms does this handguard fit? The HK416, HK416 A5, HK416 A7, MR556, and M27 IAR.

Do I need to modify my barrel nut to install this? No, it mounts directly onto the factory HK OEM barrel nut.

Can I quickly swap back to my factory rail? Yes, the Quick Rail Detach GRIDLOK latch allows a fast primary/secondary handguard swap.

Buy the Strike Industries GridLok Full Duty Handguard

Upgrade your HK416 platform with a quick-detach GRIDLOK rail. Order it from our Strike Industries lineup, part of our AR handguards selection, and get it shipped fast from our Lubbock, Texas gun shop.