Strike Industries GRIDLOK® 416 Lightspeed 9" – Quick Detach M-LOK® Handguard for HK416 / MR556 / M27 IAR (Black)

Fast removal, rock-solid return, compact control. The Strike Industries GRIDLOK-416-L-9 is a 9-inch, 1.57" OD free-float handguard engineered specifically for HK 416, HK MR556, and M27 IAR platforms. With the signature GRIDLOK® Quick Detach system, you can pull the rail without tools to access your piston/gas system, then reinstall with a secure, repeatable lock-up—so your lights, lasers, and irons stay right where you zeroed them. Machined from lightweight black anodized aluminum and packed with M-LOK® mounting slots, the 9" Lightspeed length is ideal for SBRs, suppressed setups, and close-quarters carbines that need serviceability and stability in equal measure.
Model/MPN: GRIDLOK416L9 • UPC: 793811764673

Why the GRIDLOK 416 Lightspeed 9" stands out

• Rapid QD access: Strike’s GRIDLOK® Quick Detach latch gives tool-less removal/reinstall in seconds for piston cleaning, gas tuning, or muzzle device changes—no more fighting barrel nuts or losing time between stages.

• Return-to-zero confidence: Reinforced anti-shift geometry and a rigid interface help maintain zero retention for aiming lasers, IR devices, and front sights after QD cycles.

• Compact 9" control surface: Perfect for short barrels and suppressor-forward builds—keep switches close, manage cables cleanly, and maintain a balanced center of gravity.

• Slim 1.57" diameter: Comfortable, glove-friendly circumference supports modern C-clamp grips without hot spots.

• M-LOK® everywhere you need it: Clean slots at 3, 6, and 9 o’clock for handstops, QD sling cups, lights, bipods, and cable guides—no extra rail sections required.

• 416-correct fitment: Built for HK 416 / MR556 / M27 IAR architecture for proper clearance around the piston assembly and 416-spec interface parts.

Key features at a glance

• Platform compatibility: HK 416, HK MR556, M27 IAR

• Length: 9 inches (Lightspeed)

• Outside diameter: 1.57 inches (low-profile, ergonomic)

• Attachment: GRIDLOK® Quick Detach (tool-less removal/reinstall)

• Mounting system: M-LOK® accessory slots

• Construction: Lightweight, precision-machined aluminum

• Finish: Black (durable anodized)

• Profile: Free-float to promote accuracy and consistent barrel harmonics

• Model / MPN: GRIDLOK416L9

• UPC: 793811764673

Built for performance—and serviceability

The GRIDLOK 416 Lightspeed 9" keeps your carbine mission-ready and easy to maintain. The free-float architecture removes external pressure from the barrel, supporting accuracy, while the QD mechanism gets you to the piston and gas block instantly for carbon cleanup or diagnostics. Extended M-LOK real estate provides modularity for today’s pressure pads and cable routing—especially critical when you’re running a can or working in tight interiors.

Ideal use cases

• SBRs / PDWs / CQB: Short, maneuverable rails that keep support-hand placement close and control crisp.

• Suppressed carbines: Better cable management and pad placement around cans and brakes.

• Duty & professional setups: Repeatable alignment for lasers/illumination with rapid maintenance access.

• Competition & training: Stage-side serviceability without sacrificing rigidity or zero.

Compatibility & fitment notes

• Designed for HK 416 / MR556 / M27 IAR platforms using the 416-specific interface.

• Not for standard AR-15 barrel nuts or DI-only setups—confirm your platform before purchase.

• Verify barrel profile, gas piston clearance, and muzzle device length, especially on pinned/welded systems or oversized suppressor mounts.

• If your upper has unique tolerances or aftermarket components, check fit and alignment before hard use.

Installation tips

• Professional installation recommended. Follow Strike Industries torque specs and thread-prep guidance.

• After mounting, hand-cycle to confirm unobstructed piston travel and accessory clearance.

• Reconfirm zero on all aiming devices after initial install and after any QD removal/reinstall.

What you’ll notice on the gun

• Solid lock-up that feels like a bolted-on rail—without giving up QD convenience.

• Cleaner cable routing thanks to plentiful M-LOK slots and low-profile geometry.

• Neutral balance on short barrels and suppressed builds, improving transitions and target-to-target speed.

Specifications (summary)

• Length: 9"

• OD: 1.57"

• Material: Aluminum (precision machined)

• Finish: Black anodized

• Mounting: GRIDLOK® Quick Detach

• Interface: M-LOK® (3/6/9 o’clock)

• Platform: HK 416 / MR556 / M27 IAR

• MPN: GRIDLOK416L9 • UPC: 793811764673

SEO-friendly summary

Strike Industries GRIDLOK-416-L-9—a 9" M-LOK Quick Detach free-float handguard with 1.57" OD—delivers tool-less removal, return-to-zero rigidity, and HK-correct fit for HK 416, MR556, and M27 IAR rifles. Lightweight black aluminum construction and abundant M-LOK slots make it the ideal compact rail for SBRs, suppressed builds, and duty carbines. Model GRIDLOK416L9, UPC 793811764673.

Natural keyword variations

Strike Industries GRIDLOK 416 9 inch; HK416 9" M-LOK handguard; MR556 Lightspeed rail; M27 IAR free-float QD rail; GRIDLOK quick detach handguard; 1.57" OD slim rail; GRIDLOK416L9 793811764673.

What’s in the box*

• GRIDLOK-416-L-9 Handguard (Black)

• GRIDLOK QD hardware & mounting fasteners

• Basic installation instructions

*Contents may vary by batch. Verify included parts and specific interface requirements with your retailer or Strike Industries.

Compliance: Follow all federal, state, and local regulations. Confirm platform compatibility prior to installation, and re-verify zero after any handguard removal.

The End