Product DescriptionThe Primary Weapons MK1 Mod 1-M Upper is built for AR-15 platforms and configured in 223 Wylde with an 11.85 inch barrel. This upper assembly combines compact handling with versatile chambering, making it a strong choice for shooters seeking a premium AR-style upper for range use, training, or custom rifle builds. Finished in black anodized, it delivers a clean tactical appearance while matching the modern performance-focused design expected from Primary Weapons.Product Highlights 223 Wylde chambering supports versatile AR-15 platform use with compatibility for popular .223 and 5.56-style applications. 11.85 inch barrel length offers a compact profile suited for maneuverability and modern rifle builds. Black anodized finish provides a sleek, durable exterior appearance. MK1 Mod 1-M upper configuration from Primary Weapons for AR-15 customization and performance upgrades. Ideal for builders and enthusiasts seeking a premium upper assembly with a short-barrel format. Specs Brand: Primary Weapons Model: MK1 Mod 1-M Upper Manufacturer Part Number: MK1M1U22311 UPC: 811154033468 Platform: AR-15 Caliber / Chambering: 223 Wylde Barrel Length: 11.85 in Finish: Black Anodized Product Type: Upper 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.