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GEISSELE 13.5" SUPER MODULAR RAIL MK4 M-LOK® - BLACK
Geissele 13.5" Super Modular Rail MK4 M-LOK - Black
 
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Price: $306.00

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Product Code: 05-278B
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Description Technical Specs Extended Information
 
The Geissele 13.5" Super Modular Rail MK4 M-LOK® – Black is purpose-built for unmatched durability and modularity. Designed with professional users in mind, this rail features integrated M1913 Picatinny sections at the 3, 6, and 9 o’clock positions for mounting mission-critical accessories. The MK4 also supports M-LOK® attachment slots and upper 45-degree quadrants, making it one of the most versatile options for the AR platform.

Its robust 7000 Series Aluminum construction is finished with a mil-spec Type 3 Hardcoat Anodizing to stand up to the harshest environments. The proprietary 2.25” Geissele barrel nut increases surface contact with the receiver, delivering maximum strength, perfect alignment, and consistent repeatability—even through takedown and reassembly.

Whether you're building a duty weapon or a competition rifle, the MK4 provides uncompromising rigidity, adaptability, and performance.
SUPER MODULAR RAIL DROP TEST
Features
  • Integrated M1913 Picatinny rail sections at 3, 6, and 9 o'clock positions
  • Upper 45° M-LOK® slots for additional accessory mounting
  • Purpose-built for enhanced rigidity and reduced weight
  • Proprietary 2.25" Geissele barrel nut increases alignment and repeatability
  • Free float design improves accuracy and reduces stress on the barrel
  • Maximum venting for superior heat dissipation
  • Machined from 7000 Series Aluminum for superior strength-to-weight ratio
  • Type 3 Hardcoat Anodized for long-lasting finish and corrosion resistance
  • Made in the USA

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