Geissele Super MK4 M-LOK Rail 9.5" AR-15 Handguard Black

The Geissele Super MK4 M-LOK Rail transforms AR-15 platforms with precision-machined aluminum construction and advanced mounting capabilities. This 9.5-inch handguard delivers the rigidity and modularity that competitive shooters and tactical professionals demand from their rifle systems.

What Makes This Different

Geissele's proprietary barrel nut design creates exceptional rigidity compared to standard drop-in handguards. The Super MK4 features continuous top rail alignment with the upper receiver, eliminating the point-of-impact shifts common with traditional free-float systems. CNC-machined from 6061-T6 aluminum with Type III hard coat anodizing, this rail system maintains zero under rapid fire sequences and extreme temperature variations.

Key Features

• 9.5-inch length accommodates mid-length gas systems with muzzle device clearance
• M-LOK attachment points at 3, 6, and 9 o'clock positions for accessories
• Continuous Picatinny top rail maintains upper receiver alignment
• Anti-rotation tabs prevent handguard movement under stress
• Internal diameter accommodates suppressors and most muzzle devices
• Compatible with standard AR-15 upper receivers and barrel nuts
• Includes proprietary barrel nut and installation hardware

Field testing demonstrates consistent point-of-impact retention through extended firing sessions. The M-LOK interface accepts lights, grips, and bipods without additional rail sections, reducing overall system weight. Heat dissipation channels machined into the aluminum body prevent thermal buildup during sustained fire. Law enforcement agencies and competitive shooters report maintained accuracy standards through thousands of rounds.

Technical Specs

• Length: 9.5 inches
• Weight: Approximately 11.2 ounces
• Material: 6061-T6 aluminum with Type III hard coat anodizing
• Finish: Black anodized
• Attachment: M-LOK slots at 3, 6, and 9 o'clock positions
• Top rail: Continuous Picatinny 1913 specification
• Internal diameter: 1.3 inches
• Compatibility: Standard AR-15 upper receivers
• Includes: Barrel nut, hardware, and installation instructions
• Made in USA

Geissele's reputation for precision manufacturing ensures consistent dimensions and reliable performance across production runs. The Super MK4 represents proven engineering for shooters who require unwavering accuracy from their rifle systems.