Product Description The Aero Precision AR-15 Stripped Upper Receiver (APAR501603C) is a premier firearm component recognized by military and law enforcement professionals nationwide for its exceptional fit and function. Forged from aircraft-grade 7075-T6 aluminum and precision machined to mil-spec M16/M4 specifications, this stripped upper delivers the strength, accuracy, and dependability required for serious builds. Finished in a durable anodized black coating, the flat-top design features a full-length Picatinny rail that keeps it optic-ready right out of the box. Designed to pair seamlessly with Aero Precision AR-15 lower receivers, this upper serves as the ideal foundation for any custom AR-15 build. Proudly made in the USA. Product Highlights Forged from 7075-T6 aluminum and precision machined to mil-spec M16/M4 specifications for proven strength and reliability M4 feed ramps and .250 takedown pin holes provide enhanced feeding reliability and broad lower receiver compatibility Laser engraved T-Marks and flat-top Picatinny rail deliver optic-ready versatility for a wide range of configurations Durable anodized black finish offers superior corrosion resistance and a clean, professional appearance Multi-caliber compatible and made in the USA, trusted across military, law enforcement, and civilian shooting communities Specs Brand: Aero Precision MPN: APAR501603C UPC: 815421020908 Material: 7075-T6 Forged Aluminum Finish: Anodized Black Caliber: Multi-Caliber Firearm Fit: AR-15 Receiver Type: Stripped Receiver Style: A3 Flat Top Sights: Optic Ready Weight: 6.9 oz Dimensions: 2.95" x 3.40" x 8.70" Country of Manufacture: USA 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.