Description, Features & Specifications

Description

The Air-LOK Series M-LOK Compression Free Floating Handguard is engineered for builders who want maximum rigidity, reduced weight, and a true monolithic top rail without unnecessary bulk. Made in the USA from 6061-T6 aluminum, the Air-LOK uses a compression lock system that slides over a proprietary barrel nut and clamps securely against the receiver using four locking screws.

This design creates a tight, rock-solid fit that resists rotation and flex, while allowing the handguard to sit flush against the upper receiver for a continuous Picatinny top rail. Extensive triangle and diamond skeletonized cuts reduce weight without sacrificing strength, making this an ideal choice for lightweight carbines, SBRs, and competition builds.

With M-LOK slots on three sides, integrated QD sling sockets, and a generous 1.32″ internal diameter, the Air-LOK series balances strength, airflow, and modularity across a wide range of barrel lengths.

Key Features

  • US Made

  • Compression lock free-float design

  • Monolithic Picatinny top rail

  • Precision machined from 6061-T6 aluminum

  • Skeletonized cuts to reduce weight

  • M-LOK slots on bottom, left, and right sides

  • Integrated rear QD sling sockets (left & right)

  • Tight receiver fit for improved alignment and rigidity

  • Proprietary barrel nut included

  • Heavy-duty construction without unnecessary mass

Available Length Variants

  • 4"

  • 5"

  • 6"

  • 6.75"

  • 7"

  • 9"

  • 10"

  • 12"

  • 15"

  • 16.5"

Available Color Options

  • Black

  • Flat Dark Earth

  • Olive Drab

  • Gold

  • Red

  • Blue

  • Purple

  • Silver

  • Orange

  • Grey

  • Bronze

  • Pink

Specifications (Series Overview)

  • Material: Aluminum

  • Material Grade: 6061-T6

  • Finish: Anodized

  • Mounting System: M-LOK

  • Top Rail: Monolithic Picatinny

  • Internal Diameter: 1.32"

  • Caliber Compatibility:

    • 5.56

    • 9mm

Estimated Weights by Length (Including Barrel Nut)

Weights scale proportionally from manufacturer data and internal dimensions.

  • 4" – ~6.2 oz

  • 5" – ~7.1 oz

  • 6" – ~8.0 oz

  • 6.75" – ~8.6 oz

  • 7" – ~9.0 oz

  • 9" – ~10.4 oz

  • 10" – ~11.3 oz

  • 12" – ~12.6 oz

  • 15" – ~13.2 oz

  • 16.5" – ~14.1 oz

(Weights may vary slightly by anodized color and production batch.)

Why Choose the Air-LOK Series?

The Air-LOK system is ideal for builders who want:

  • A true free-float handguard

  • Superior lock-up without timing issues

  • Lightweight performance with structural integrity

  • Clean monolithic rail alignment for optics and lasers

  • A wide range of lengths and color customization

It delivers the rigidity of heavier rails while maintaining the handling characteristics of a lightweight build.

Description

The Air-LOK Series M-LOK Compression Free Floating Handguard is engineered for builders who want maximum rigidity, reduced weight, and a true monolithic top rail without unnecessary bulk. Made in the USA from 6061-T6 aluminum, the Air-LOK uses a compression lock system that slides over a proprietary barrel nut and clamps securely against the receiver using four locking screws.

This design creates a tight, rock-solid fit that resists rotation and flex, while allowing the handguard to sit flush against the upper receiver for a continuous Picatinny top rail. Extensive triangle and diamond skeletonized cuts reduce weight without sacrificing strength, making this an ideal choice for lightweight carbines, SBRs, and competition builds.

With M-LOK slots on three sides, integrated QD sling sockets, and a generous 1.32″ internal diameter, the Air-LOK series balances strength, airflow, and modularity across a wide range of barrel lengths.

Key Features

  • US Made

  • Compression lock free-float design

  • Monolithic Picatinny top rail

  • Precision machined from 6061-T6 aluminum

  • Skeletonized cuts to reduce weight

  • M-LOK slots on bottom, left, and right sides

  • Integrated rear QD sling sockets (left & right)

  • Tight receiver fit for improved alignment and rigidity

  • Proprietary barrel nut included

  • Heavy-duty construction without unnecessary mass

Available Length Variants

  • 4"

  • 5"

  • 6"

  • 6.75"

  • 7"

  • 9"

  • 10"

  • 12"

  • 15"

  • 16.5"

Available Color Options

  • Black

  • Flat Dark Earth

  • Olive Drab

  • Gold

  • Red

  • Blue

  • Purple

  • Silver

  • Orange

  • Grey

  • Bronze

  • Pink

Specifications (Series Overview)

  • Material: Aluminum

  • Material Grade: 6061-T6

  • Finish: Anodized

  • Mounting System: M-LOK

  • Top Rail: Monolithic Picatinny

  • Internal Diameter: 1.32"

  • Caliber Compatibility:

    • 5.56

    • 9mm

Estimated Weights by Length (Including Barrel Nut)

Weights scale proportionally from manufacturer data and internal dimensions.

  • 4" – ~6.2 oz

  • 5" – ~7.1 oz

  • 6" – ~8.0 oz

  • 6.75" – ~8.6 oz

  • 7" – ~9.0 oz

  • 9" – ~10.4 oz

  • 10" – ~11.3 oz

  • 12" – ~12.6 oz

  • 15" – ~13.2 oz

  • 16.5" – ~14.1 oz

(Weights may vary slightly by anodized color and production batch.)

Why Choose the Air-LOK Series?

The Air-LOK system is ideal for builders who want:

  • A true free-float handguard

  • Superior lock-up without timing issues

  • Lightweight performance with structural integrity

  • Clean monolithic rail alignment for optics and lasers

  • A wide range of lengths and color customization

It delivers the rigidity of heavier rails while maintaining the handling characteristics of a lightweight build.

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Guntec Air-LOK M-LOK Compression Free Float Handguard

$89.95
$89.95
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