Expo Arms Free Float AR-15 Handguard – M-LOK (10.5")

Expo Arms Free Float AR-15 Handguard – M-LOK – 10.5"

Build a streamlined, capable AR-15 with the Expo Arms 10.5-inch Free Float M-LOK Handguard. Machined from durable 6061-T6 aluminum and finished in black hardcoat anodizing, this slim rail provides extensive accessory mounting space while helping keep unnecessary bulk and weight off the front of the rifle.

Free Float Performance for AR-15 Builds

The free float design isolates the handguard from the barrel, allowing a solid mounting platform for lights, grips, hand stops, and other M-LOK accessories. Its 10.5-inch length is well suited to AR-15 SBR configurations with approximately 11-inch barrels, while the 1.35-inch internal diameter provides clearance for many low-profile gas blocks.

Secure Anti-Rotation Lockup

Expo Arms includes a matching 6061-T6 aluminum barrel nut and integrated anti-rotation tabs for a stable interface with Mil-Spec AR-15 upper receivers. This design helps the handguard remain properly aligned during repeated firing and hard use.

Full 7-Sided M-LOK Mounting Capability

M-LOK slots on seven sides of the rail give you flexible placement options without the excess size of a full-length Picatinny quad rail. Configure your rifle around your preferred shooting style, support-hand position, and accessory setup.

Key Features

• 10.5-inch free float handguard for AR-15 platforms
• Full 7-sided M-LOK accessory attachment compatibility
• Slim profile for improved handling and support-hand comfort
• Machined from 6061-T6 aluminum bar stock
• Includes 6061-T6 aluminum barrel nut
• Integrated anti-rotation tabs for a secure, aligned installation
• Black hardcoat anodized finish
• Designed for Mil-Spec AR-15 upper receivers

Specifications

• Brand: Expo Arms
• SKU / MPN: XP-GUARD105-BLK
• Platform: AR-15
• Handguard Length: 10.5 in
• Accessory Attachment: M-LOK
• Mounting Surfaces: 7-sided M-LOK
• Material: 6061-T6 aluminum
• Barrel Nut Material: 6061-T6 aluminum
• Finish: Black hardcoat anodized
• Inner Diameter: 1.35 in
• Compatible Gas System Length: Mid-length
• Receiver Compatibility: Mil-Spec AR-15 upper receivers

Compatibility

• Compatible with Mil-Spec AR-15 upper receivers.
• Designed around mid-length gas system configurations.
• Provides internal clearance for many low-profile gas blocks; always verify gas block dimensions before installation.
• Ideal for compact AR-15 and SBR builds using an appropriately configured barrel.

Not Compatible

• Not intended for AR-10, LR-308, or other large-frame AR platforms.
• Not guaranteed to fit non-Mil-Spec upper receivers.
• May not clear fixed front sight bases or oversized gas blocks; verify component dimensions before purchase.

Important Notes

• Professional installation is recommended. Proper barrel nut torque and alignment are essential for safe, reliable performance.
• Confirm barrel length, gas system length, gas block dimensions, and muzzle-device clearance before ordering.
• Observe all applicable federal, state, and local laws when building, configuring, or possessing an AR-15 or SBR.

Built for a Clean, Capable AR-15 Setup

Whether you are upgrading an existing rifle or assembling a new compact AR-15, the Expo Arms 10.5-inch M-LOK Handguard delivers the slim handling, secure lockup, and versatile accessory space needed for a practical hard-use build.

Frequently Asked Questions

Will this Expo Arms handguard fit a standard AR-15 upper receiver?

Yes. It is designed for Mil-Spec AR-15 upper receivers. Fit is not guaranteed with non-Mil-Spec receiver dimensions.

Is this a free float handguard?

Yes. The handguard mounts to its included barrel nut rather than contacting the barrel, creating a free float setup.

What accessories can I mount to this rail?

The handguard uses M-LOK slots on seven sides for compatible lights, grips, hand stops, sling mounts, bipod adapters, and other M-LOK accessories.

Will a low-profile gas block fit under this handguard?

The 1.35-inch inner diameter is designed to provide room for many low-profile gas blocks. Verify your specific gas block’s outside dimensions before installation.

Does this handguard include a barrel nut?

Yes. A 6061-T6 aluminum barrel nut is included.

What do the anti-rotation tabs do?

The anti-rotation tabs interface with the upper receiver to help keep the handguard aligned and reduce the chance of the rail shifting during use.

Is this handguard compatible with an AR-10 or LR-308?

No. This model is designed for the AR-15 platform and is not intended for large-frame AR receivers.

What barrel length works with a 10.5-inch handguard?

A 10.5-inch handguard is commonly used on compact AR-15 builds with approximately 11-inch barrels. Confirm muzzle-device clearance and your complete build dimensions before installation.