Shop › FORTIS NIGHT RAIL 556 14.4" MLOK BLK FORTIS NIGHT RAIL 556 14.4" MLOK BLK $255.50 Fortis Manufacturing, Inc. Night Rail, Free Float Rail System, Handguard, 14.4", M-LOK, Fits AR15, Black NTR-14-MLOK Quantity: Add To Cart Added! Fortis Manufacturing, Inc. Night Rail, Free Float Rail System, Handguard, 14.4", M-LOK, Fits AR15, Black NTR-14-MLOK