Product Description The Spike&';s Tactical Delta Ring Assembly is a fully Mil-Spec assembly designed to help you complete an AR-style upper build quickly and correctly. The included barrel nut is machined from durable chromoly steel, properly heat treated, and finished with a protective phosphate coating. The weld spring and snap ring also feature a Mil-Spec phosphate finish, while the delta ring itself is made from Mil-Spec aluminum with a black anodized finish. Everything arrives already assembled so you can install your barrel and move your build one step closer to completion. Product Highlights Mil-Spec delta ring assembly ready for AR upper receiver builds Chromoly steel barrel nut with heat treatment and phosphate finish Phosphate-finished weld spring and snap ring for Mil-Spec compatibility Mil-Spec aluminum delta ring with black anodized finish Includes barrel nut, weld spring, snap ring, and delta ring (pre-assembled) Specs Brand: Spike&';s Tactical Product Type: Delta ring assembly (with barrel nut) Compatibility/Fit: AR rifle / AR-15 style Color/Finish: Black; phosphate finish (barrel nut, weld spring, snap ring); black anodized (delta ring) Materials: Chromoly steel (barrel nut); aluminum (delta ring) Included Components: Barrel nut, weld spring, snap ring, delta ring Manufacturer Part Number: SDR100A UPC: 855713006999 Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.