Fortis Manufacturing SWITCH AR15 Mod 1 Rail System 13.0in MLOK Black. M-LOK sections up front that gives you flexibility and freedom to run ylight solutions. No more need for purchasing additional off-set light mounts. Mount it directly on the rail and go. The 6.7in length is very intentional. This will work with even most direct thread suppressors on a 7.5in barrel. The gap will be very minimal and the look - well amazing. The Fortis SWITCH series is an extremely lightweight yet robust free float rail system designed for the AR platform. When designing the SWITCH we wanted a handguard that was easy to install but also be able to quickly change rails for a variety of mission or competition specific setups. The rail features a brand new patent pending locking mechanism that allows tool-less removal of the rail. The rail design not only looks great but is very functional in yhand. The piece adds minimal weight to the rifle and you won't be disappointed Specifications for Fortis Manufacturing SWITCH AR15 Mod 1 Rail System: Manufacturer: Fortis Manufacturing Color: Black Finish: Mil-Spec HardCoat Anodized Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Type: Free-Float Gun Rail: M-LOK Condition: New Included Accessories: Standard Inner Diameter: 1.34 in Mount Type: M-LOK Quantity: 1 Features of Fortis Manufacturing SWITCH AR15 Mod 1 Rail System MLOK at the 3 6 and 9 o'clock and off-set location Clamp torque setting 20 in lbs Spanner wrench needed to torque barrel nut to spec (not included) Package Contents: Fortis Manufacturing SWITCH AR15 Mod 1 Rail System Fortis Manufacturing 556-SWITCH-M1-130-ML: SWITCH AR15 Mod 1 Rail System 13.0in MLOK Black