The Geissele 13.5" Super Modular Rail (SMR) MK8 M-LOK® is designed for maximum modularity and precision. As one of the first handguards to integrate Magpul's M-LOK™ technology, this rail offers superior versatility and heat dissipation.

The MK8’s vented design significantly reduces weight, ensuring a lightweight but rigid platform for tactical and competitive shooting applications. The proprietary 2.25" long barrel nut increases surface contact with the receiver, improving accuracy, durability, and zero repeatability after maintenance.

Built from 7000 series aluminum and finished with a Type-3 hardcoat anodized finish, the Geissele MK8 M-LOK® handguard is engineered to withstand the harshest conditions while maintaining a sleek and streamlined profile.

Manufacturer	Geissele Automatics
Model	13.5" Super Modular Rail MK8 M-LOK®
Color	Black
Material	7000 Series Aluminum
Finish	Type-3 Hardcoat Anodized
Length	13.5"
Inner Diameter	1.35"
Outer Diameter (DAQ*)	2.11"
Height	2.3"
Weight	10.8 oz (13.1 oz w/ barrel nut)
Mounting System	M-LOK®
Barrel Nut Length	2.25"
Compatibility	Designed for Mil-Spec M4 Upper Receivers

NOTE: IF THIS IS YOUR FIRST TIME PURCHASING A GEISSELE AUTOMATICS RAIL, YOU WILL NEED TO PURCHASE A BARREL NUT WRENCH IN ORDER TO PROPERLY INSTALL THE RAIL. CLICK HERE TO PURCHASE

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

Click here to review Geissele's DDC (Desert Dirt Color) disclaimer before purchasing.