FREE Shipping on Canada & Mexico orders over $249 USD! See Details

FREE Shipping on U.S. orders over $75.

Check out what's on Sale! Shop Now!

Geissele Automatics  |  SKU: OTMML-13.5-13514  |  UPC: 43202594

Geissele MK14 13.5" Super Modular Rail - M-LOK 0.3 lb

Regular price $274.99 USD
Shipping calculated at checkout.

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

By continuing to checkout, you agree to our Terms of Service, Shipping Policy, Return Policy, and product restrictions.

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

💰 Add $75.00 more to unlock free U.S. shipping.


🚚 Fast, trackable shipping

🔒 Secure checkout

🎯 Real magfed support

🚚 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" MK14 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 Accessory Mounting System: The Geissele MK14 Super Modular Rail features an M-Lok accessory mounting system, allowing for easy and solid attachment of various accessories and equipment to your AR-15. This system provides versatility and customization options for your firearm.

Slim Profile: Designed with shooters in mind, the MK14 handguard has a slim profile, making it ideal for shooters with smaller hands. This ergonomic design enhances comfort and control.

Made in the USA: Geissele handguards are precision CNC machined in North Wales, Pennsylvania, USA, ensuring high-quality craftsmanship and attention to detail.

Anti-Rotation Tabs: The handguard is equipped with anti-rotation tabs, which are essential for maintaining secure alignment of the handguard top rail with the top rail of the upper receiver. It is most compatible with Mil-Spec upper receivers or forged AR-15 upper receivers due to the narrowness of the anti-rotation tabs, which may not fit over billet AR-15 upper receivers.

Picatinny Top Rail: The Super Modular Rail Handguard features a Picatinny rail that spans the entire top of the handguard. This provides a solid platform for mounting optics, sights, or other accessories.

QD Mounts: For added convenience in attaching and detaching your sling, the MK14 handguard comes with 2 QD (Quick Detach) mounts already machined into it.

Included Components: The package includes the barrel nut, handguard, and mounting hardware, simplifying the installation process.

The Geissele 13.5" MK14 Super Modular Rail AR-15 Freefloat Handguard offers excellent quality and functionality for AR-15 owners. Its slim profile, M-Lok accessory mounting system, and Picatinny top rail make it a versatile choice for customization and accessory attachment. The anti-rotation tabs and QD mounts further enhance its utility, making it a reliable addition to your AR-15 platform.

Specifications

  • Model
    13.5" MK14 Super Modular Rail - M-LOK - Black
  • Material
    Aluminum
  • Color / Finish
    Black / Type 3 Hard Coat Anodized
  • Included Components
    Barrel nut
  • Platform Compatibility
    Mil-Spec AR
  • Mounting Interface
    M-LOK, Picatinny / 1913
  • Length
    13.5 inches
  • Weight
    12 oz.

Reviews & Questions

Payment & Security

Payment methods

  • Ach Direct Debit
  • Amazon
  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Shop Pay
  • USDC
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Buy now pay later with Shop Pay

Buy now pay later with Shop Pay