Product DescriptionThe One Horse LLC AR-15 Complete Upper Receiver is built for shooters seeking a compact .300 Blackout upper assembly with ready-to-install convenience. This complete upper features a 10.5 inch barrel length, black finish, and a 1:7 twist rate suited for .300 AAC Blackout performance. Its complete configuration makes it a practical choice for AR-15 builds, upgrades, or replacement upper assemblies where compact size and versatile caliber capability are priorities.Product Highlights Complete AR-15 upper receiver assembly designed for convenient installation and upgrade use. Chambered for .300 Blackout / .300 AAC Blackout for versatile shooting applications. Compact 10.5 inch configuration supports maneuverability in tighter shooting setups. Black finish offers a clean tactical appearance that pairs easily with AR-platform components. 1:7 twist rate helps stabilize a broad range of .300 Blackout projectile weights. Specs Brand: One Horse LLC Manufacturer Part Number: OHCU05 UPC: 850078799326 Product Type: AR-15 Complete Upper Receiver Caliber: .300 Blackout / .300 AAC Blackout Barrel Length: 10.5 in Twist Rate: 1:7 Color: Black Style: Complete Weight: 3.76 lb 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.