Firefield Verge M-LOK Rail 12in Black. The rail is 7in long and is made from high-quality hardened steel to ensure that the rail is durable and secure with smooth edges for comfortable shooting. The textured rail is strong and easy to grip great for shooters who prefer a handguard with a smoother finish. The Firefield Verge M-LOK Rail also includes a built-in sling loop great for multiple sling options. The Firefield Verge M-LOK Rail allows shooters to mount weapon accessories with tight tolerances such as a weapon light or laser. Specifications for Firefield Verge M-LOK Rail 7in: Manufacturer: Firefield Color: Black Gun Make: AR Platform Package Contents: Firefield Verge M-LOK Rail 7in Firefield FF34066: Verge M-LOK Rail 12in Black