Geissele 10.5" HK416 M-LOK MK15 Desert Dirt Color™ Super Modular Rail (05‑827S) is a compact, ultra-rigid free-float handguard built specifically for HK416/MR556 platforms. Featuring a lightweight 10.5″ design, this rail delivers maximum modularity via a full Picatinny top rail and M-LOK slots at 3, 6, and 9 o’clock positions. Machined from aircraft-grade aluminum and finished in Desert Dirt Color™ Type III hardcoat anodizing, this rail offers exceptional strength, corrosion resistance, and sleek low-profile styling tailored for tactical use.

• Material: Aircraft-grade aluminum
• Finish: Desert Dirt Color™ (DDC), Type III hardcoat anodized
• Length: 10.5″ free-float configuration (actual rail: ~9 ⅜″)
• Mounting: Full-length Picatinny top rail; M-LOK slots at 3, 6, and 9 o’clock
• Attachment: Torque-free hinge-style clamp with anti-rotation tabs and set screws
• Weight: Approximately 12–14 oz
• Compatibility: HK416 / MR556-pattern uppers only
• Part Number: 05‑827S