The Geissele MK8 Super Modular Rail (brand part no. 05-284S) is a 9.3-inch, Desert Dirt-finished M-LOK handguard and one of the first rails to bring Magpul’s M-LOK system to Geissele’s ultra-modular MK8 platform. M-LOK slots run the 3, 6, and 9 o’clock positions plus the upper 45-degree quadrants, while maximum venting at the lower quadrants trims weight and dissipates heat. The rail ships with Geissele’s proprietary 2.25-inch-long barrel nut, which increases surface contact where the rail meets the receiver, keeping the free-float rail straight and true along its entire length and improving accuracy and zero repeatability during maintenance.

Key Specifications

• Measures 9.3 inches in length.
• Finished in Desert Dirt Color (DDC).
• Features M-LOK slots at the 3, 6, and 9 o’clock positions plus the upper 45-degree quadrants.
• Maximum venting at the lower 45-degree quadrants reduces weight and aids heat dissipation.
• Includes Geissele’s proprietary 2.25-inch-long barrel nut.
• Barrel nut design keeps the rail straight and true along its full length.
• Improves accuracy and zero repeatability during disassembly and reassembly.

Frequently Asked Questions

Does this rail include a barrel nut? Yes, it ships with Geissele’s proprietary 2.25-inch-long barrel nut.

What color does this rail come in? Desert Dirt Color (DDC).

Buy the Geissele MK8 Super Modular Rail

Get a rock-solid zero and full M-LOK modularity in a Desert Dirt finish. Order it from our Geissele Automatics lineup of AR handguards for fast shipping from our Lubbock, Texas gun shop.