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 in the event of disassembly for maintenance.
Note: This is the 9.3" rail, new stock. Geissele had made 9.5" rails in the past, with the same SKU.
Note: package contains rail, barrel nut and allen wrenches. Does not contain gas block. Does not contain barrel nut wrench
Manufacturer's Product No. 05-284S
ID* - Inner Diameter
OD* - Outer Diameter
DAQ* - Distance Across Quadrants
NOTE: Geissele rails are designed to work with Mil-Spec M4 upper receivers. The compatibility with billet receiver sets is unknown.