Product Description The TacFire BU-556-16 complete rifle upper assembly is a ready-to-install AR-platform upper chambered in 5.56x45mm NATO. It features a 16-inch black nitride barrel and a black anodized 7075-T6 aluminum receiver for durability and corrosion resistance. The M-LOK handguard provides flexible accessory mounting, and the upper is optic-ready to pair with your preferred sights/optics. This assembly includes a bolt carrier group, making it a convenient upgrade or replacement upper for compatible AR-style lowers. Product Highlights Complete AR-platform upper assembly chambered in 5.56x45mm NATO for broad ammunition compatibility 16" barrel with black nitride finish for enhanced wear and corrosion resistance 7075-T6 aluminum receiver with black anodized finish for strength and long service life M-LOK handguard for lightweight handling and versatile accessory attachment Includes bolt carrier group (BCG) for a more complete, ready-to-mount upper Specs Brand: TacFire Model: Rifle Upper Assembly (Complete) Caliber: 5.56x45mm NATO Barrel Length: 16" (16" to 16.99" range) Barrel Finish: Black Nitride Receiver Material: 7075-T6 Aluminum Receiver Finish: Black Anodized Handguard: M-LOK (Black) Sights: Optic Ready Muzzle Device: A2 Flash Hider Included: Bolt Carrier Group (BCG) Approx. Weight: 4.82 lb Approx. Dimensions: 26.4" L x 3.2" W x 3.2" H UPC: 686294505850 Manufacturer Part Number: BU55616 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.