Geissele 13.5" M-LOK MK4 DDC Super Modular Rail 05-278S is a rugged and lightweight handguard built for reliability in demanding conditions. Designed for AR-15 pattern rifles, it combines Geissele’s proprietary 2.25" long barrel nut and a precise 6-bolt attachment for unmatched rigidity and alignment. The full-length Picatinny top rail and M-LOK slots at 3, 6, and 9 o'clock provide extensive space for lights, grips, and other accessories, while the Desert Dirt Color (DDC) anodized finish enhances durability and aesthetics.

• Length: 13.5"
• Mounting: Full Picatinny top rail, M-LOK at 3, 6, and 9 o’clock
• Material: Aircraft-grade aluminum
• Finish: Desert Dirt Color (DDC) Type III hardcoat anodized
• Includes: Barrel nut and installation hardware
• Attachment system: 6-bolt interface with 2.25" barrel nut
• Part Number: 05-278S