Geissele DDC, or Desert Dirt Color, refers to the variety of shades of desert terrain. Differing shades of DDC are desired on a military small arm to breakup the outline of the weapon.
These colors can vary from color seen in the picture of the product, and can also vary from each other when comparing one product to another product. So it is possible that your accessory rails will not match exactly to your rail. Please see pictures below of several examples of DDC. Please note that even the product you receive may vary slightly from these examples shown.
Due to the chemical process that takes place during Type 3 Hardcoat, the finish on the product can vary from one to the next, even if it is the same batch. The only way to receive a uniform finish on all parts and accessories to match a color you desire, is to have it recoated or painted with a different finish, for example Cerakote ™ or DuraCoat. However please be aware, that these other types of finishes will not be as durable and will be more easily prone to scratches and scrapes.
DDC Pictures taken with DSLR, under fluorescent light and no flash.