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Geissele Automatics

Geissele Automatics - 15" Super Modular Rail MK14 - M-LOK, Black

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  • Geissele Automatics 15" Super Modular Rail MK14 with M-LOK in black. This is a longer version of the modular rail systems by Geissele, providing more space for mounting accessories due to its extended length. It maintains the features of the MK8, like the M-LOK slots for accessory attachment, but offers a longer top Picatinny rail for additional scope, sight, or other tactical accessory placement. The black finish is sleek and versatile for various firearm configurations.
  • Geissele Automatics Super Modular Rail MK14, measuring 15 inches in length, and featuring the M-LOK system. This longer rail provides a stable platform for mounting a variety of accessories over an extended area, catering to users who need the additional space for optics, bipods, lights, or other tactical gear. The black finish contributes to its sleek appearance and is commonly selected for its aesthetic appeal and low-profile look in various operational environments.
  • The image you've provided shows a gas block, an Allen wrench, and a set screw. These items are typically used in the assembly and maintenance of the gas system on a rifle, such as an AR-15. The gas block is mounted onto the barrel and aligns with the gas port to regulate the gas flow back into the action, which is essential for the semi-automatic operation of the rifle. The Allen wrench and the set screw are tools used for securing the gas block in place.

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Geissele 15" Super Modular Rail MK14 M-LOK - Black Overview

Geissele 15" Super Modular Rail MK14 M-LOK¨ - Black: The Ultimate in Precision and Modularity

The Geissele 15" Super Modular Rail MK14 M-LOK¨ in Black marks the latest evolution in the esteemed Geissele line of Super Modular Rails. This handguard is crafted to offer shooters a slimmer, more streamlined package without compromising on the durability and functionality Geissele is known for.

Enhanced Design for Optimal Performance

Featuring an updated Geissele Barrel Nut design, the MK14 ensures easy installation alongside unmatched rigidity. The extensive surface contact of the 2.25Ó barrel nut with the receiver guarantees a reliable platform that remains true over its entire length, enhancing your rifle's accuracy and performance.

Customization and Compatibility

With MagpulÕs M-LOK technology positioned at the 3, 6, and 9 oÕclock locations, the MK14 rail offers comprehensive customization opportunities. This allows for secure mounting of lights, bipods, and other essential accessories, tailoring your rifle to meet specific operational requirements.

Durable Construction and Specifications

  • Material: 6061-T6 Aluminum for strength, rigidity, and lightness
  • Finish: Durable Type 3 Hardcoat Anodized
  • Color: Black (also available in DDC)
  • Inner Diameter: 1.27"
  • Outer Diameter (DAQ*): 1.52"
  • Available Lengths: 9.3", 10.5", 13.5", 15"
  • Weight for 15": 11.6oz (13oz with barrel nut)


The Geissele 15" Super Modular Rail MK14 M-LOK¨ - Black stands as a paragon of precision engineering, offering a superior platform for shooters aiming for the pinnacle of rifle performance. Its slim design, coupled with the ability to customize and enhance your rifle, makes it an essential upgrade for any serious shooter.

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Additional Information

Model / Type:
Super Modular Rail MK14
Mount Style:
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