B5 Systems Vertical M-Lok Grip Black. Features aggressive four-sided texture and includes M-LOK installation hardware. Specifications for B5 Systems Vertical M-Lok Grip: Manufacturer: B5 Systems Mount: M-LOK Mount Type: M-LOK Features of B5 Systems Vertical M-Lok Grip: Durable composite material Textured on all 4 sides Mounts in 2 directions Compatible with standard M-LOK rail systems. Package Contents: B5 Systems Vertical M-Lok Grip B5 Systems VFG-1571: Vertical M-Lok Grip Black