Nordic Components Picatinny, Mount, 3 Slot, 1.59, Fits M-LOK, Black TRL-MLOK-STD-3 This Nordic Components 3-Slot Picatinny Rail Section is 1.59" in length and fits an M-LOK mounting interface. It's precision machined from high strength mil-spec aluminum featuring beveled edges to reduce snags" and includes all necessary M-LOK mounting hardware. Nordic Components is an American-owned manufacturing company proud to produce quality products right here in the USA.