Geissele 13.5" M-LOK MK4 Black Super Modular Rail 05-278B is a premium handguard built for the MK4 rifle platform, offering extended length and superior modularity. With a 13.5-inch profile and M-LOK attachment system, this rail provides ample space for mounting lights, grips, and other accessories. Constructed from high-strength aluminum and finished in black anodizing, it delivers durability, lightweight performance, and enhanced control in demanding conditions.

• Length: 13.5 inches
• Attachment System: M-LOK
• Compatible Platform: MK4 rifle series
• Material: High-strength aluminum alloy
• Finish: Black anodized
• Weight: Lightweight construction
• Mounting: Modular accessory attachment points
• Durability: Built for rugged and long-term use
• Manufacturer Part Number: 05-278B