Midwest Industries 1913 Milspec Aluminum Rail Section M-lok Black . These Picatinny Rails by Midwest Industries are precision machined from 6061 aluminum and hard coat anodized to provide years of reliable service. The Midwest Industries M-Lok 1913 MIL SPEC Rail Section is a popular option for shooters who need a longer length over standard rails. For an incredible way to ensure you are mounting your favorite optics and attachments with ease pick up the Midwest Industries M-Lok 1913 MIL SPEC Rail Section 7 Slot. Specifications for Midwest Industries MWI M-Lok 1913 MIL SPEC Rail Section 7 Slot: Manufacturer: Midwest Industries Color: Black Finish: Type III Hardcoat Anodized Fabric/Material: 6061 Aluminum Gun Type: Rifle Mount Type: M-LOK Country of Origin: USA Package Contents: Midwest Industries MWI M-Lok 1913 MIL SPEC Rail Section 7 Slot The Midwest Industries MWI M-Lok 1913 MIL SPEC Rail Section 7 Slot Black MI-7MR is a quality addition to the Midwest Industries lineup. For more great deals on Picatinny Rails by Midwest Industries please browse our Midwest Industries Gun Parts page. Midwest Industries MI-7MR: M-Lok 1913 MIL SPEC Rail Section 7 Slot Black