Strike Industries GRIDLOK® 416 Lightspeed 16" – Quick Detach M-LOK® Handguard for HK416 / MR556 / M27 IAR (Black)
Go longer, go lighter, and get faster access to your gas system. The Strike Industries GRIDLOK-416-L-16 is a 16-inch, 1.57" OD free-float handguard engineered specifically for HK 416, HK MR556, and M27 IAR platforms. Featuring Strike’s signature GRIDLOK® Quick Detach (QD) system, the Lightspeed variant delivers ultra-fast, tool-less removal with a rigid duty lock-up—perfect for maintenance, tuning, and transport without sacrificing zero on mission-critical accessories.
Built from precision-machined black anodized aluminum, this long, slim rail maximizes sight radius and provides abundant M-LOK® real estate while keeping weight in check. If you’re running a rifle-length 416-pattern setup and want the fastest, most serviceable free-float you can get—this is the upgrade.
Model / MPN: GRIDLOK416L16 • UPC: 793811764703
Why the GRIDLOK 416 Lightspeed stands out
Rapid QD removal & reinstall: Strike’s GRIDLOK® latch lets you remove or reattach the handguard without tools, giving direct access to the gas block, piston, and muzzle area in seconds.
Full-length capability, lightweight feel: At 16 inches, this rail stretches your support-hand reach and sight radius while the Lightspeed machining reduces mass for quick transitions.
Rock-solid lock-up: Reinforced anti-shift geometry helps preserve return-to-zero for lights, lasers, and IR devices after removal.
Comfortable 1.57" diameter: Slim, controllable profile supports modern C-clamp grips and glove use without hot spots.
M-LOK® everywhere you need it: Clean mounting rows at 3, 6, and 9 o’clock let you place switches, cable management, handstops, bipods, and sling cups exactly where you want them—no extra rails required.
416-correct interface: Purpose-built for HK 416 / MR556 / M27 IAR architecture for a clean fit over the proper barrel nut and gas system.
Key features at a glance
Platform compatibility: HK 416, HK MR556, M27 IAR
Length: 16 inches
Outside diameter: 1.57 inches (low-profile, glove-friendly)
Attachment: GRIDLOK® Quick Detach handguard system (tool-less)
Mounting system: M-LOK® accessory slots
Construction: Lightweight, precision-machined aluminum
Finish: Black (duty-grade anodized)
Profile: Free-float for improved consistency and barrel harmonics
Model / MPN: GRIDLOK416L16
UPC: 793811764703
Built for performance, tuned for serviceability
The free-float design removes external pressure from the barrel to promote accuracy, while the QD architecture makes maintenance painless—clear carbon from the piston, swap a muzzle device, or re-position cabling in minutes. Extended M-LOK slots keep your setup modular and future-proof, so your rail evolves with your mission or match.
Ideal use cases
Duty & professional carbines: Rigid lock-up and repeatable alignment for aiming lasers and white lights.
Competition & training: Long, stable gripping surface with instant access for stage-side maintenance.
Suppressed builds: Extended length helps with switch placement and cable routing around cans and brakes.
Compatibility & fitment notes
Designed for HK 416 / MR556 / M27 IAR-pattern rifles using the correct 416 interface.
Verify gas system and barrel profile clearance—especially with pinned brakes or large-format suppressors.
Not intended for standard AR-15 barrel nuts. Confirm platform before purchase.
Installation tips
Professional installation recommended. Follow torque specs and thread-locker guidance per Strike Industries.
After mounting, cycle the action and verify unobstructed piston travel and accessory clearance.
Re-confirm zero on all aiming devices after initial install and after any QD removal/reinstall.
SEO-friendly summary
Strike Industries GRIDLOK-416-L-16 (16" M-LOK free-float handguard, 1.57" OD, Black anodized aluminum) with the GRIDLOK® Quick Detach system delivers tool-less removal, duty-grade rigidity, and HK-correct fitment for HK 416, MR556, and M27 IAR rifles. Model GRIDLOK416L16, UPC 793811764703—the long, lightweight rail that maximizes control, serviceability, and accessory space.
Natural keyword variations
Strike Industries GRIDLOK 416 Lightspeed; 16" HK416 handguard; MR556 M-LOK rail 16 inch; M27 IAR free-float rail; quick detach 416 handguard; GRIDLOK quick detach system; GRIDLOK416L16 793811764703; lightweight aluminum M-LOK handguard.
What’s in the box*
*Contents may vary. Always verify included components with the retailer or Strike Industries.
Compliance: Follow all federal, state, and local regulations. Confirm compatibility with your specific 416-pattern rifle before installation. Re-verify zero after any handguard removal.
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