MDT JAE M-LOK Picatinny Forend Rail Black 4in 107237-BLK. Specifications for MDT JAE M-LOK Picatinny Forend Rail: Manufacturer: MDT Finish: Mil-Spec Type III Hard Anodize Fabric/Material: 6061-T6 Aluminum Color: Black Quantity: 1 Country of Origin: USA...