Shop › MAGPUL M-LOK ALUM RAIL SECT 3 SLOTS MAGPUL M-LOK ALUM RAIL SECT 3 SLOTS $18.00 Magpul Industries Rail Section, Fits M-LOK Hand Guard, Aluminum, 3 Slots MAG580-BLK Quantity: Add To Cart Added! Magpul Industries Rail Section, Fits M-LOK Hand Guard, Aluminum, 3 Slots MAG580-BLK