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Geissele Automatics  |  SKU: 05-285B

Geissele MK8 13.5" Super Modular Rail - M-LOK 0.56 lb

Regular price $306.00 USD
Shipping calculated at checkout.

Premium 13.5-inch AR-15 M-LOK handguard with Picatinny top rail, QD sling mounts, anti-rotation tabs, and barrel nut.

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⚠️ Sold for sporting and training applications. Customer is responsible for ensuring compliance with all applicable local laws and regulations. See Terms .

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🚚 Shipping & Delivery

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, Exchanges & Warranty

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.

🌍 International Shipping

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. Delays caused by customs or local authorities are outside of our control. Faster transit times may be available through expedited shipping options, though this does not guarantee faster customs processing.

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

Customers are responsible for ensuring that all items ordered comply with their country’s import laws and for obtaining any required permits or documentation prior to purchase. We do not provide guidance on country-specific import requirements.

If a package is rejected, unclaimed, or returned due to unpaid duties, missing documentation, import restrictions, or an incorrect address:

  • The order will be issued as store credit only
  • Original shipping costs are non-refundable
  • Any non-recoverable shipping or return fees may be deducted

If a shipment is lost, seized, or not returned, an insurance claim must be completed before any resolution is provided. If the claim is denied, no refund or credit will be issued.

Pressurized or restricted items will ship via ground services only where permitted.

For more information view our Shipping Policy and our Refund Policy.

Questions? Contact [email protected] before checkout.

🎖️ Military / GovX Discounts

⚙️ Product Details

The Geissele 13.5" MK8 Super Modular Rail AR-15 Freefloat Handguard is a high-quality accessory designed to enhance your AR-15 platform. Here are the specifications and key features of this handguard:

Key Features:

M-Lok Mounting System: The Geissele MK8 Super Modular Rail utilizes the M-Lok mounting system, allowing for easy and solid mounting of various accessories and grips on multiple positions of the handguard. This provides versatility and customization options for your AR-15.

Made in the USA: Geissele handguards are proudly precision CNC machined in the United States, ensuring high-quality craftsmanship and attention to detail.

Picatinny Rail: The handguard is CNC machined with a Picatinny rail that spans the top of the entire handguard. This top rail provides a solid platform for mounting optics, sights, or other accessories.

Durable Finish: To maintain corrosion resistance, the Geissele handguard is treated with a Type 3 hardcoat anodizing. This finish not only adds to its aesthetics but also ensures long-lasting performance even in challenging environments.

QD Mounts: The handguard features 2 QD (Quick Detach) mounts CNC machined into it, allowing for quick and easy sling attachment and detachment. This enhances the convenience and versatility of your AR-15.

Anti Rotation Tabs: The handguard is equipped with anti-rotation tabs, which are essential for indexing the handguard top rail to maintain alignment with the top rail of the upper receiver. This feature ensures a secure and stable fit.

Barrel Nut Included: The handguard comes with a barrel nut and the necessary mounting hardware, making installation straightforward and hassle-free.

The Geissele 13.5" MK8 Super Modular Rail AR-15 Freefloat Handguard is known for its exceptional quality and durability, making it an excellent choice for AR-15 owners who demand a reliable and versatile handguard for their firearm. Its M-Lok attachment system and Picatinny rail provide flexibility and customization options for your accessories, while the anti-rotation tabs and QD mounts enhance functionality and ease of use.

Specifications

  • Model
    13.5" MK8 Super Modular Rail
  • Material
    6061-T6 Aluminum
  • Color / Finish
    Black / Anodized
  • Included Components
    Barrel nut
  • Platform Compatibility
    Mil-Spec AR
  • Mounting Interface
    M-LOK, Picatinny / 1913
  • Length
    13.5 inches

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