Fortis Manufacturing SWITCH 308 Rail System 15 in MLOK Black Medium. 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 features M-LOK slots QD attachment points as well as a full picatinny rail on top. 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 308 Mod 2 Rail System: Manufacturer: Fortis Manufacturing Color: Black Finish: Mil-Spec HardCoat Anodized Fabric/Material: Locking Handle 7075-T6 Aluminum 6061-T6 Aluminum Gun Make: AR Platform Gun Model: AR-10 Gun Type: Rifle Handguard Type: Free-Float Gun Rail: M-LOK Condition: New Inner Diameter: 1.51 in Mount Type: M-LOK Quantity: 1 Features of Fortis Manufacturing SWITCH 308 Mod 2 Rail System DPMS High Profile Clamp torque setting 32 in lbs MLOK at the 3 6 and 9 o'clock (and off-sets) Package Contents: Fortis Manufacturing SWITCH 308 Mod 2 Rail System 4140 Heat Treated Barrel Nut Fortis Manufacturing 308-SWITCH-15-ML: SWITCH 308 Rail System 15 in MLOK Black Medium