The Ragna free floating forend is different than any forend Odin Works has ever made. The Ragna was designed for the fastest install possible making this forend a complete change from previous forends. The Ragna features a one-piece barrel nut with no shims or clocking needed. Made from 6061T6 aluminum with type 2 hard anodized coating, the Rangna is sure to stand the test of time and prove its quality day after day. The included one-piece barrel nut is black nitride coated for extra durability. The Ragna is available in 15.5" and also comes with M-Lok attachment points where you need them. Strong, lightweight, and unique; the Ragna is sure to make any build better! Note: All mounting hardware is included.