Ultra Lightweight M-LOK Free Float Handguard – Monolithic Top Rail (Multiple Lengths)

This Ultra Lightweight M-LOK Free Float Handguard is engineered for shooters who demand maximum rigidity, minimal weight, and clean monolithic alignment across a wide range of AR builds. Proudly made in the USA, this handguard is designed to deliver strength and precision without unnecessary bulk.

Machined from 6061 T6 aluminum, the rail features a tight, receiver-hugging interface that creates a monolithic top rail appearance, ensuring consistent optic alignment and enhanced structural rigidity. The handguard slides over the included proprietary barrel nut and locks firmly against the receiver using six heavy-duty mounting screws, resulting in a secure, no-shift free-float system.

Despite its strength, this handguard remains exceptionally light. Even in longer configurations, the rail maintains excellent balance, making it ideal for lightweight builds, duty rifles, and performance-oriented setups. The M-LOK mounting system allows for flexible accessory placement while keeping the profile slim and snag-free.

With an internal diameter of 1.34″, the handguard clears most low-profile gas blocks with ease. Available in a wide range of lengths, this system supports everything from compact PDW-style builds to full-length rifles. Finished in anodized black for corrosion resistance and durability, this rail delivers both function and clean aesthetics.

Compatible with 5.56 and 9mm AR platforms, this handguard offers a versatile solution for nearly any modern AR configuration.

Available Length Options

• 4″

• 5″

• 6″

• 6.25″

• 9″

• 10″

• 12″

• 15″

• 16.5″

Key Features

• Ultra lightweight free float M-LOK handguard

• Monolithic-style continuous top Picatinny rail

• Proprietary barrel nut included

• Six-screw locking system for rigid receiver interface

• Tight fit against receiver for improved alignment

• M-LOK system for modular accessory mounting

• Low-profile gas block compatible

• Made in the USA

Specifications

• Mounting System: M-LOK

• Top Rail: Full-length Picatinny (monolithic appearance)

• Material: 6061 T6 Aluminum

• Finish: Anodized Black

• Internal Diameter: 1.34″

• Caliber Compatibility: 5.56 / 9mm

• Pattern: Solid

• Country of Origin: USA

Most in-stock items ship within 3–4 business days.

If an item shows Backorder or Special Order, extra vendor lead time applies.

To ensure delivery before Christmas, place your order by the following dates (includes fulfillment time):

USPS Ground Advantage – Order by Dec 13

USPS Priority Mail – Order by Dec 14

USPS Priority Mail Express – Order by Dec 16

UPS 3-Day Select – Order by Dec 15

UPS 2-Day Air – Order by Dec 18

UPS Next Day Air – Order by Dec 19

International customers: Order by Nov 28 – Dec 5, depending on service and location.

For full vendor lead times and detailed shipping info, read the complete Holiday Buyer’s Guide →

Most in-stock items ship within 3 business days.

Special order items are typically processed within 14 business days (excluding weekends and holidays).

Custom items may require additional time depending on production schedules.

If you’d like to receive your order sooner, please select an expedited shipping option at checkout.

Some products ship directly from the manufacturer, and an equivalent carrier or service level will be chosen to match your selected shipping speed.

Shipping delays caused by carriers are outside our control, but we’ll always help track updates.

See our Shipping Policy for details.

Returns are accepted within 14 days for items that are unused, unopened, and in original packaging with no damage.

A restocking fee applies, but it may be partially waived if store credit is selected instead of a refund to the original payment method.

Custom builds, sale items, and hazardous goods are final sale.

Warranty Coverage: Manufacturer warranties apply to all standard products. Any defects, malfunctions, or performance issues are handled directly by the manufacturer per their terms.

HR Tactical Innovations covers a Fitment & Functionality Guarantee on all custom or modified items — if a verified production error occurs, we’ll replace the item.

View our Refund Policy for full details.

We ship worldwide to Canada, Mexico, Europe, Asia, and Oceania, including:

🇨🇭 Switzerland • 🇨🇿 Czechia • 🇩🇪 Germany • 🇩🇰 Denmark • 🇪🇸 Spain • 🇫🇮 Finland • 🇫🇷 France • 🇬🇧 United Kingdom • 🇭🇰 Hong Kong SAR • 🇮🇪 Ireland • 🇮🇹 Italy • 🇯🇵 Japan • 🇰🇷 South Korea • 🇲🇾 Malaysia • 🇳🇱 Netherlands • 🇳🇴 Norway • 🇵🇱 Poland • 🇵🇹 Portugal • 🇸🇪 Sweden • 🇸🇬 Singapore • 🇦🇺 Australia • 🇳🇿 New Zealand • 🇦🇪 UAE and more.

Transit averages 2–4 weeks depending on customs clearance. We are not responsible for customs delays. Reduced transit times are only available through expedited shipping options.

Import duties, VAT, and taxes are not included in your order total and must be paid by the recipient.

If a package is rejected, unclaimed, or returned due to unpaid duties, an incorrect address, or failure to collect, it will be handled under our Refund Policy. Shipping costs are non-refundable in these cases.

Pressurized or restricted items ship ground only where permitted.

Questions? Contact ops@hrtacticalin.com before checkout.