Fortis Manufacturing, Inc. Rev Ii Free Float Rail System, 14″, Continuous Picatinny Top Rail, Mlok At 3/6/9 O’clock, Black Anodized Finish, Does Not Include Barrel Nut Rev-ii-14-mlok Model: REV IIProduct Type: RailFinish/Color: BlackDescription: Continuous Picatinny Top Rail, MLOK at 3/6/9 O’clockSize: 14