Geissele Super Modular Rail MK4 M-LOK 9.3"

Geissele Super Modular Rail MK4 M-LOK Handguard

The Super Modular Rail (SMR) MK4 M-LOK represents Geissele's answer to shooters demanding a lightweight, modular handguard without compromise on strength or accuracy.

Key Features

Design & Construction

• Ultra-lightweight design achieved through strategic venting for superior heat dissipation
• Maintains rigid, strong platform despite weight reduction
• Free-float design ensures consistent accuracy and zero repeatability

Modularity & Mounting

• Full M-LOK compatibility at 3, 6, and 9 o'clock positions plus upper 45-degree quadrants
• Integrated short M1913 Picatinny rail sections at 3, 6, and 9 o'clock for traditional accessory mounting
• Allows complete customization to match your specific shooting needs

Barrel Nut System

• Proprietary 2.25" long barrel nut increases surface contact with receiver
• Creates a platform that remains straight and true along the entire free-float length
• Enhances accuracy and zero repeatability during maintenance and reassembly
• Requires Geissele barrel nut wrench for installation (sold separately)

Specifications

• Length: 9.3 inches
• Color: Desert Dirt (Flat Dark Earth)
• Mounting System: M-LOK and Picatinny
• Finish: Anodized aluminum
• Compatibility: AR-platform rifles

What's Included

• Super Modular Rail MK4 handguard
• Proprietary barrel nut

Note: Barrel nut wrench and gas block sold separately. Minor finish variations and imperfections are normal and do not affect performance.