The Fortis SWITCH M1 is an extremely lightweight yet robust 15.3" M-LOK free float rail system designed specifically for the AR-15 platform. Featuring a revolutionary patent pending locking mechanism that allows tool-less removal of the rail for quick mission or competition setup changes.Fortis SWITCH M1 15.3" M-LOK HandguardAircraft Grade 6061-T6 Aluminum construction7075-T6 Aluminum locking handleLightweight at only 10.04 oz (barrel nut: 1.7 oz)1.34" internal diameter with continuous top railTool-less installation and removal systemFree float design for enhanced accuracyPerfect for shooters who need the flexibility to quickly adapt their rifle configuration for different applications from tactical missions to competitive shooting sports.