The Sons Of Liberty Gun Works M8913 M89 Drive Lock Rail 13" M-LOK delivers a rigid, free-floating handguard solution for AR-15 builders who want secure mounting and clean lines. Built around the patent-pending Drivelock interface and a proprietary steel barrel nut, this rail uses three internal wedges to clamp down with consistent pressure while maintaining alignment with the upper receiver and full-length Picatinny top rail.

This 13-inch M-LOK handguard offers generous internal clearance around the gas block and extended mounting space for lights, grips, and other accessories. Its black anodized finish and carefully machined slots help manage weight without sacrificing strength, making it a solid choice for range use, training builds, or duty-ready AR configurations. The M89 system reflects Sons Of Liberty Gun Works’ focus on dependable design and thoughtful engineering.

• Manufacturer: Sons Of Liberty Gun Works
• Model: M89 Drive Lock Rail 13" M-LOK
• Type: Handguard
• Fit: AR-15
• Rail Interface: Full-length Picatinny top with M-LOK slots
• Finish: Black anodized
• Length: 13 inches