Product DescriptionThe Colt&';s Manufacturing LE6920EPRII Upper Receiver Conversion Kit is a factory-assembled complete upper designed for shooters who want to upgrade a compatible AR-15 or M4 lower receiver with a duty-ready 5.56 NATO setup. Built around a 16.1-inch barrel and finished in matte black, this upper delivers the proven Colt platform with modern enhancements for accuracy, modularity, and field use. Supplementary product details indicate a chrome-lined carbon steel barrel, direct gas impingement operating system, and a free-floating aluminum M-LOK handguard that helps isolate the barrel from external pressure for more consistent performance. This Gen II style upper is well-suited for patrol, training, range use, and custom rifle builds.Product Highlights Complete Colt upper receiver conversion kit chambered in 5.56 NATO for AR-15 and M4 compatible lower receivers 16.1-inch barrel configuration offers a versatile balance of handling, velocity, and practical field performance Free-floating aluminum M-LOK handguard supports accessory mounting while promoting improved shot-to-shot consistency Matte black finish delivers a professional appearance and pairs easily with modern rifle components Factory-assembled Colt design provides a convenient upgrade path for building an Enhanced Patrol Rifle style platform Specs Brand: Colt&';s Manufacturing Model: LE6920EPRII Product Type: Upper Receiver Conversion Kit Caliber: 5.56 NATO Barrel Length: 16.1 inches Compatibility: Fits AR-15/M4 lower receivers Finish: Matte Color: Black Handguard: Free-floating aluminum M-LOK handguard Barrel Material: Chrome-lined carbon steel Twist Rate: 1:7 right-hand twist Operating System: Direct gas impingement UPC: 098289035622 Manufacturer Part Number: LE6920-EPRII-CK 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.