Strike Industries GRIDLOK® 416 Full Duty 9" – Quick Detach M-LOK Handguard for HK416 / MR556 / M27 IAR (Black)
Upgrade your 416-pattern rifle with the handguard built for mission-ready durability and fast field service. The Strike Industries GRIDLOK-416-FD-9 is a 9-inch, 1.57" outside diameter free-float rail engineered specifically for HK 416, HK MR556, and M27 IAR platforms. Featuring Strike’s signature GRIDLOK® Quick Detach (QD) system, this Full Duty model combines rock-solid lock-up with tool-less removal—so you can access the gas system, change muzzle devices, or pack the rifle for transport in seconds.
Designed from hard-anodized aluminum with precision-machined M-LOK® slots, the GRIDLOK-416-FD-9 balances rigidity, heat management, and accessory placement while maintaining a streamlined profile that clears suppressors and low-profile gas blocks. If you’re running a 10.4–14.5" 416-pattern setup and want maximum versatility without added bulk, this is the rail.
Why the GRIDLOK-416-FD-9 Stands Out
Fast QD Removal & Re-Install: The GRIDLOK® Quick Detach latch and front release let you remove the handguard without special tools—ideal for maintenance, tuning, or cleaning in the field.
Full Duty Strength: Reinforced locking geometry and an anti-shift interface deliver repeatable alignment and dependable zero retention for attached devices.
Mission-Driven Ergonomics: The 1.57" diameter gives a comfortable, controllable grip for modern support-hand placement, with a shapely profile that mitigates heat and snagging.
M-LOK Everywhere You Need It: Ample M-LOK® slots at 3, 6, and 9 o’clock provide secure mounting for lights, lasers, handstops, QD sling cups, and bipods—without extra weight.
Optimized for Suppressors: Open front clearance and rigid free-float design support suppressed configurations while maintaining accessory alignment.
HK-Correct Fitment: Purpose-built for HK 416 / MR556 / M27 IAR barrel nut and gas system geometry for clean lines and a factory-grade interface.
Key Features at a Glance
Platform Compatibility: HK 416, HK MR556, M27 IAR
Model / MPN: GRIDLOK-416-FD-9
UPC: 793811764710
Length: 9 inches (ideal for 10.4–14.5" 416-pattern barrels)
Outside Diameter: 1.57 inches
Mounting System: M-LOK®
Attachment: GRIDLOK® Quick Detach (tool-less handguard removal)
Construction: Precision-machined aluminum (hard-anodized)
Finish: Black (duty-grade Cerakote/Type III hard-coat anodize aesthetic)
Profile: Free-float, slim, and ergonomic for modern rifle handling
Built for Performance & Upgrades
The GRIDLOK-416-FD-9 is a true free-float system that keeps external pressure off the barrel for improved consistency. The lightweight aluminum chassis manages heat better than bulky quad rails, while the M-LOK pattern gives you the flexibility to tailor your setup: offset light placement at 1:30 or 10:30, a low-profile handstop for barricade control, or a top-mounted laser aiming module with consistent indexing.
Ideal Use Cases
Duty & Defensive Carbines: Robust lock-up and repeatable alignment for white lights, lasers, and sling hardware.
Competition & Training: Quick maintenance between stages with the QD system; slimmer feel for faster transitions.
Suppressed Setups: Plenty of front-end clearance; stable mounting surface for cable management and switches.
Modern Recce/Patrol Builds: Trim weight, add only the accessories you need, and keep the rifle balanced.
SEO-Friendly Summary
Strike Industries GRIDLOK-416-FD-9 (9" M-LOK handguard, 1.57" diameter, Black aluminum, GRIDLOK Quick Detach) for HK 416 / HK MR556 / M27 IAR delivers free-float accuracy, tool-less removal, and duty-ready durability—the perfect 9-inch rail upgrade for 416-pattern rifles. Model: GRIDLOK416FD9. UPC: 793811764710.
Natural Keyword Variations
Strike Industries 416 handguard; GRIDLOK 416 FD 9; HK416 M-LOK handguard; MR556 M-LOK rail; M27 IAR free-float rail; quick detach handguard; 9 inch 416 rail; aluminum M-LOK forearm; GRIDLOK quick detach system; GRIDLOK416FD9 793811764710.
What’s in the Box*
GRIDLOK-416-FD-9 Handguard (Black)
Integrated GRIDLOK QD hardware
Mounting fasteners & basic instructions
*Contents can vary by shipment; always verify included components with the retailer or Strike Industries.
Fitment & Installation Notes
Designed for HK 416 / MR556 / M27 IAR platforms and the correct 416-style interface.
Professional installation is recommended. Ensure proper torque values and thread treatment per manufacturer guidance.
After installation, confirm clearance for suppressors/muzzle devices and re-verify zero on all aiming devices.
Compliance: Follow all federal, state, and local regulations. Confirm compatibility with your specific model before purchase or installation.
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