Shop › MIDWEST M-LOK 7 SLOT RAIL SECTION MIDWEST M-LOK 7 SLOT RAIL SECTION $19.95 Midwest Industries M-LOK 1913 Milspec Rail Section, 7 Slot, M-LOK compatible, Black MI-7MR Quantity: Add To Cart Added! Midwest Industries M-LOK 1913 Milspec Rail Section, 7 Slot, M-LOK compatible, Black MI-7MR