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Geissele Super Modular MK8 M-LOK 13.5in Rail - Black

by Geissele
ID 1628419
MPN 05-285B


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Geissele Super Modular MK8 M-LOK 13.5in Rail - Black


Geissele Super Modular MK8 M-LOK 13.5in Rail - Black
by Geissele


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Geissele Super Modular MK8 M-LOK 13.5in Rail - Black - The Super Modular Rail (SMR) MK8 M-LOK is Geissele’s ultra-modular model. The SMR MK8 is one of the first rails available to utilize the Magpul M-LOK technology. These rails are designed to give the user full modularity while maintaining a strong and rigid platform. Maximum venting at the lower 45 degree quadrants create maximum heat dissipation and also dramatically reduces the rail's overall weight. Utilizing Magpul's M-LOK technology at the 3, 6, and 9 o'clock positions, as well as the upper 45 degree quadrants. The SMR MK8 is both versatile and modular, allowing the user to tailor their platform to his or her unique needs. 

The SMR MK8 also features Geissele's proprietary 2.25in long barrel nut. This increases the surface contact where the rail interfaces with the receiver and creates a platform that can be trusted to be straight and true the entire length of the free float rail. This increases accuracy and zero repeatability during disassembly and reassembly when performing maintenance. 


  • Does Not Include Barrel Nut Wrench
  • Type-3 Hardcoat Anodized
  • 6061-T6 Aluminum


Brand Fit AR15/M4/M16 Platform
Color Black
Finish Hardcoat Anodized
Material Aluminum
Model Fit AR15/M4/M16 Platform
Part Type Handguard/Rail
Size 13.5in
Type Rifle
Weight 10.8oz


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  • We'll keep you informed of any recall notifications.
  • Free packing/shipping to manufacturer &/or manufacturer's authorized service center for warranty repairs ($20-$40 value).
  • 15% discount on all customizing & elective gunsmith services and FREE shipping to The Gunsmith at Sportsman's Warehouse.
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