Geissele 15" M‑LOK MK4 Black Super Modular Rail 05‑315B is an extended-length handguard crafted for the MK4 rifle platform, offering maximum flexibility for accessory mounting. At 15 inches, this rail provides ample real estate for lights, grips, optics, and other tactical gear using the M‑LOK attachment system. Made from high-strength aluminum and finished with a rugged black anodized coating, it delivers lightweight handling and battlefield durability in a sleek, modular design.

• Length: 15 inches
• Attachment System: M‑LOK
• Compatible Platform: MK4 rifle series
• Material: High-strength aluminum alloy
• Finish: Black anodized
• Weight: Lightweight design
• Mounting: Modular accessory M‑LOK slots
• Durability: Built for rugged and long-term use
• Manufacturer Part Number: 05‑315B