Product DescriptionThe Battle Arms Development Authority Elite complete upper receiver is built around a billet BAD556 7075-T6 aircraft-grade aluminum upper with integral ambidextrous controls for fast, intuitive manipulation from either side. It features a free-float rail handguard with M-LOK attachment points at the 3, 6, and 9 oclock positions, plus a full-length 12 oclock Picatinny rail with Battle Arms signature notch cut for a clean, aligned profile. A 16-inch 4150 chrome-moly steel barrel with a black nitride finish delivers durable, consistent performance, and the system is individually headspaced with a matching 9310 steel bolt and 8620 black nitride carrier for reliability and easier cleaning. This upper includes the BAD Rack-15 ambidextrous charging handle and an AR-15/M16 bolt carrier group, making it a premium, ready-to-run choice for AR-15 builds and upgrades.Product Highlights Billet BAD556 7075-T6 aircraft-grade aluminum upper receiver with integral ambidextrous controls 16-inch 4150 chrome-moly steel barrel with black nitride finish for durability and accuracy Free-float M-LOK handguard with 3/6/9 oclock attachment points and full-length top Picatinny rail Individually headspaced with matching 9310 steel bolt and 8620 black nitride carrier for reliable cycling Includes BAD Rack-15 ambidextrous charging handle and AR-15/M16 bolt carrier groupSpecs Brand: Battle Arms Development Model: Authority Elite Product Type: Complete Upper Receiver Assembly Platform Fit: AR-15 Caliber: 5.56 (as stated on product naming) Barrel Length: 16 in Upper Receiver Material: Billet 7075-T6 aircraft-grade aluminum (BAD556) Controls: Integral ambidextrous Handguard: Free-float with M-LOK attachment points (3/6/9 oclock) Top Rail: Full-length Picatinny with signature notch cut Barrel Material: 4150 chrome-moly steel Barrel Finish: Black nitride Bolt Material: 9310 steel Carrier Material: 8620 steel Carrier Finish: Black nitride Included: BAD Rack-15 ambidextrous charging handle; AR-15/M16 bolt carrier group Color/Finish: Black anodized (receiver/assembly) UPC: 810033786075 Manufacturer Part Number: BAD-AUTH-UR16B-Y-15Disclaimer: 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 products manufacturer.