Geissele Automatics was established in 2004 as a manufacturer of trigger mechanisms for the AR-15 rifle. Geissele products quickly became the trigger of choice for M4 carbine platform weapons by many U.S. Special Forces entities. Rely on Geissele when you expect superior performance, quality, and reliability.

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° 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. 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.

Features and Specifications:
Manufacturer Number: 05-284S
Geissele Automatics AR-15 9.3" Super Modular Rail MK8 M-LOK Tan
Length: 9.3"
MK8 Inner Diameter: 1.35"
MK8 Outer Diameter: 2.11"
MK8 with Magpul M-LOK attachment system
Picatinny rails sections at 3, 6, and 9 o'clock
Ergonomic
Free Floating
Modular
Proprietary 2.25" long barrel nut
Lightweight, Strong and Rigid
Overall Weight: 10.6oz
Color: Desert Dirt

Fits:
AR-15 Upper Receivers



Note: MK8 rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.

Note: This product is new and being closed out; sold "As Is" and is not returnable to Cheaper Than Dirt. Please contact the manufacturer for warranty and assistance.