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 II Finish/Color: Black Size: 14" Type: Rail Manufacturer: Fortis Manufacturing, Inc. Model: REV II Mfg Number: REV-II-14-MLOK