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Questions & Answers
Is the barrel nut wrench included?

NO. YOU WILL NEED TO PURCHASE A BARREL NUT WRENCH IN ORDER TO PROPERLY INSTALL THE RAIL.

by D, Verified Owner, February 18, 2025
Customer Reviews
Most Recent Reviews
geissele mk8 looks amazing by ian, Verified Owner, February 7, 2026
Love the rail. 10.5” on a 11.5” barrel fits perfect. Rail did come with the nice qd insert as well!
Most Recent Reviews
geissele 10.5 handguard by Sean Gonzalez, Verified Owner, January 15, 2026
Perfect to chop down to a 7.25” handguard since they’ve discontinued the 7”
Most Recent Reviews
Excellent quality, fast shipping by T, Verified Owner, June 21, 2025
Item was shipped quickly, cant go wrong. Rail looks amazing.
Read All 3 Reviews

Product No Longer Available

Unfortunately Geissele MK8 Super M-Lok 10.5in Modular Rail is not listed by OpticsPlanet.

Product Info for Geissele MK8 Super M-Lok 10.5in Modular Rail

The Super Modular Rail (SMR) MK8 M-LOK is Geisseles 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 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 quadrants. The SMR MK8 is both versatile and modular, allowing the user to tailor their platform to his or her unique needs.image

The SMR MK8 also features Geissele's proprietary 2.25" 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.

Package Contents:

  • Geissele MK8 Super M-Lok 10.5in Modular Rail
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Last updated 2026-09-27 UTC.