Geissele MK8 Super Modular Rail 13.5" M-LOK Black AR-15 Handguard

The Geissele Automatics MK8 Super Modular Rail transforms AR-platform rifles with precision-engineered modularity and rock-solid mounting capability. This 13.5-inch handguard delivers the rigidity and accuracy enhancement that competitive shooters and tactical professionals demand from their primary weapon system.

What Makes This Different

Geissele's proprietary barrel nut design eliminates the timing issues common with standard AR handguards, creating a true free-float system that maintains zero under stress. The 6061-T6 aluminum construction provides 40% greater rigidity than mil-spec polymer alternatives while weighing just 11.2 ounces. Advanced CNC machining creates perfect M-LOK slot alignment across all mounting surfaces, ensuring accessories lock precisely where positioned.

Key Features

• 13.5-inch length accommodates mid-length and carbine gas systems with suppressor clearance
• M-LOK mounting system at 3, 6, and 9 o'clock positions with continuous 12 o'clock Picatinny rail
• 6061-T6 aluminum construction with Type III hard anodized finish for corrosion resistance
• Proprietary barrel nut eliminates timing requirements and anti-rotation tabs
• 2.25-inch internal diameter clears most suppressors and muzzle devices
• Compatible with standard AR-15 upper receivers and low-profile gas blocks
• Includes all mounting hardware and proprietary barrel nut wrench

Field testing demonstrates consistent sub-MOA accuracy improvements over standard handguards due to reduced harmonic interference with barrel vibration. The extended length provides optimal balance for precision shooting while maintaining maneuverability in close-quarters scenarios. Military and law enforcement agencies have adopted this rail system for duty rifles operating in extreme temperature ranges from -40°F to 160°F without shift in zero or mounting integrity.

Technical Specs

• Length: 13.5 inches
• Weight: 11.2 ounces
• Material: 6061-T6 aluminum with Type III hard anodizing
• Internal diameter: 2.25 inches
• Rail height: AR-15 standard (same plane as upper receiver)
• Mounting: Proprietary barrel nut system
• Compatibility: AR-15 platform, low-profile gas blocks
• Finish: Black anodized
• Made in USA

This handguard represents the engineering precision that has made Geissele the choice of Special Operations units worldwide. The MK8's combination of weight savings, mounting versatility, and accuracy enhancement justifies its position as a premium upgrade for serious rifle builders.