Product DescriptionThe Battle Arms Development Authority Elite complete upper receiver is built around a billet BAD556 7075-T6 aircraft-grade aluminum receiver with integral ambidextrous controls for confident, user-friendly operation. A free-float handguard with M-LOK attachment points at the 3, 6, and 9 o'clock positions provides flexible accessory mounting, while the full-length Picatinny top rail includes Battle Arms' signature notch cut for a clean, matched look. The 16-inch 4150 chrome-moly steel barrel features a black nitride treatment to enhance durability and maintain accuracy. For reliability and simplified maintenance, the barrel is individually headspaced to a matching 9310 steel bolt and an 8620 black nitride carrier, and this upper includes the Bad Rack-15 C ambidextrous charging handle and an AR-15/M16 bolt carrier group.Product HighlightsBillet BAD556 upper receiver made from 7075-T6 aircraft-grade aluminum with integral ambidextrous controls16-inch 4150 chrome-moly steel barrel with black nitride finish for durability and accuracyFree-float M-LOK handguard with attachment points at 3, 6, and 9 o'clock plus full-length Picatinny top railIndividually headspaced 9310 steel bolt matched to an 8620 black nitride carrier for reliable cycling and easier cleaningIncludes Bad Rack-15 C ambidextrous charging handle and AR-15/M16 bolt carrier groupSpecsBrand: Battle Arms DevelopmentModel: Authority EliteType: Complete Upper ReceiverPlatform Fit: AR-15Caliber: 5.56 NATO / 5.56x45mmBarrel Length: 16 inBarrel Material: 4150 chrome-moly steelBarrel Finish: Black nitrideReceiver Material: 7075-T6 aircraft-grade aluminumHandguard: Free-float M-LOKTop Rail: Full-length PicatinnyCharging Handle: Bad Rack-15 C ambidextrous (included)Bolt Carrier Group: AR-15/M16 (included); 9310 steel bolt, 8620 carrier; black nitride finishColor/Finish: Black anodizedManufacturer Part Number: BAD-AUTH-UR16B-Y-15CUPC: 810033786082Disclaimer: 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.