Product DescriptionThe Primary Weapons MK109 MOD 1-M Upper Receiver is a premium AR-15 upper chambered in .300 Blackout and built for compact performance. It features a 9.75 inch barrel with a 1:8 twist rate, making it well-suited for a wide range of .300 Blackout loads. This upper is equipped with a PWS Triad muzzle device, an 8.9 inch PWS PicLok M-LOK handguard, and a black anodized finish for durability and a clean tactical look. It also includes a Radian Raptor ambidextrous charging handle for fast, intuitive manipulation.Product Highlights Complete Primary Weapons MK109 MOD 1-M upper receiver designed to fit AR-15 platforms Chambered in .300 Blackout with a 9.75 inch barrel and 1:8 twist for versatile shooting performance Equipped with a PWS Triad muzzle device to help manage muzzle signature and performance Features an 8.9 inch PWS PicLok M-LOK handguard for accessory mounting and improved handling Includes a Radian Raptor ambidextrous charging handle and durable black anodized finish Specs Product Type: Upper Receiver Assembly Platform Fit: AR-15 Model: MK109 MOD 1-M Caliber: .300 Blackout Barrel Length: 9.75 inches Twist Rate: 1:8 Muzzle Device: PWS Triad Handguard: 8.9 inch PWS PicLok M-LOK Charging Handle: Radian Raptor Ambidextrous Charging Handle Finish: Anodized Color: Black UPC: 811154033451 MPN: MK1M1U300BLK9 Brand: Primary Weapons 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.