Geissele Super Modular Rail MK4 Federal 10" M-LOK Desert Tan

The Geissele Super Modular Rail MK4 Federal is a 10-inch handguard for AR-15 and M4 platforms, designed to replace the factory handguard and give the shooter a mounting surface for accessories. It is built from aircraft-grade aluminum with a Type III hardcoat anodized finish in Federal Desert Tan.

The rail carries integrated 1913 Picatinny sections at the 3, 6, and 9 o'clock positions near the front, with an extended Picatinny section along the 6 o'clock position for vertical grips, lights, and bipods. M-LOK slots are placed at 3, 6, and 9 o'clock and in the upper 45-degree quadrants. The design uses maximum venting to reduce weight and aid airflow during sustained fire.

The handguard mounts with a Geissele proprietary barrel nut and fasteners.

• Length: 10 inches
• Material: Aircraft-grade aluminum
• Finish: Type III hardcoat anodized
• Color: Federal Desert Tan
• Compatibility: AR-15 / M4 platforms
• Mounting: Geissele proprietary barrel nut and fasteners
• Rails: 1913 Picatinny at 3, 6, and 9 o'clock; extended Picatinny at 6 o'clock
• Attachment system: M-LOK at 3, 6, 9 o'clock and upper 45-degree quadrants