Geissele MK4 Super Modular 13.5" M-LOK Handguard
Geissele's ultra-lightweight MK4 Super Modular Rail features integrated Picatinny sections, M-LOK slots, and a proprietary 2.25" barrel nut for maximum accuracy and modularity.
Geissele MK4 Super Modular Rail: Purpose-Built Performance
The Super Modular Rail (SMR) MK4 M-LOK represents Geissele's commitment to precision engineering and shooter customization. This 13.5" handguard combines lightweight construction with rigid, free-floating design—essential for consistent accuracy.
Key Features
- Integrated Picatinny Rails: Short M1913 Picatinny rail sections at 3, 6, and 9 o'clock positions provide mounting points for optics, lights, and other accessories
- M-LOK Compatibility: Magpul M-LOK slots at 3, 6, and 9 o'clock positions plus upper 45-degree quadrants allow infinite customization options
- Proprietary Barrel Nut: Geissele's 2.25" long barrel nut increases surface contact with the receiver, ensuring a straight, true platform across the entire free-float rail
- Maximum Venting: Strategically designed ventilation dramatically reduces weight while maintaining structural rigidity and allowing heat dissipation during extended shooting sessions
Why It Matters
The free-floating design eliminates contact between the barrel and handguard, a critical factor in precision shooting. The extended barrel nut interface creates a platform you can trust for accuracy and zero repeatability—whether you're reassembling after maintenance or moving between shooting positions.
Installation Note
Installation requires a Geissele barrel nut wrench (sold separately). Gas block not included.
Features
- height: 2.4 "
- inner diameter: 1.35 "
- outer diameter: 2.11 "
- weight w/ hardware: 13.5oz.
- length 13.5"
- includes barrel nut (barrel nut wrench sold separately)"
- geissele automatics ar-15 13.5 super modular rail mk4 m-lok"
