Product Features & Specifications

Geissele Automatics 05315B Super Modular MK4 M-Lok Rail AR-15 Black Hardcoat Anodized Aluminum 15" Picatinny

The Super Modular Rail (SMR) MK4 M-LOK are purpose-built and feature integrated M1913 picatinny rail sections. Maximum venting for heat dissipation also dramatically reduces the rail's overall weight, while maintaining its same strong and rigid platform.

Utilizing Magpul's M-LOK technology at the 3, 6, and 9 o'clock positions, as well as the upper 45 quadrants. The SMR MK4 is both versatile and modular, allowing the user to tailor their platform to his or her unique needs.

The SMR MK4 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.

Brand	Geissele Automatics
Series	MK4
Model	Super Modular Rail
Firearm Fit	AR-Platform
Color	Black
Material	6061-T6 Aluminum
Finish	Anodized
Style	M-LOK
Rails	Picatinny
Length	15"
Diameter	1.35"
Weight	12.80 oz
SKU	05315B
UPC	854014005731