Bravo Company's BCM Picatinny Aluminum Rail Section is made of Hard Anodized Aircraft Aluminum Alloy. The mounting hardware is made of Corrosion Resistant Stainless Steel and made to the Mil-Standard 1913 Picatinny Arsenal Specifications. It features a Snag resistant design, while retaining Mil-Standards specs. The self-contained assembly eliminates the possible loss of mounting hardware