Adjustable DHR-Rail for Accuracy International firearms with CNC machined “Slot Stud ™” technology. Attaches in seconds. Made from 6061-T Aircraft type aluminum Hard Anodized Type III Flat Black Will handle all Picatinny Rail grabbers and will support any Harris Bipod with original “pinch pin” factory attachments. DHR-Rail approx. 4.925 inches in length not including spigot. Insert into Accuracy International bipod spigot hole therefore placing your bipod more forward. No machining required.