Product DescriptionThe Alexander Arms 50 Beowulf Upper Parts Kit is a semi-complete DIY upper assembly designed for AR-15 platform builds chambered in 50 Beowulf. This kit includes a 16 inch black-finished barrel with a 1:20 twist, a complete black aluminum upper receiver, charging handle, gas block, dowel pins, gas tube, complete bolt carrier group with bolt, and one 7-round magazine. Built for shooters seeking a powerful big-bore upper configuration, this kit is optic ready and features a threaded muzzle with thread protector. Please note that a handguard is required to complete the build.Product Highlights Designed for AR-15 platforms and chambered in powerful 50 Beowulf for hard-hitting performance. Includes a 16 inch black barrel with 1:20 twist rate for proper stabilization of 50 Beowulf ammunition. Features a complete black aluminum upper receiver and complete bolt carrier group with bolt. Comes with charging handle, gas block, gas tube, dowel pins, thread protector, and one 7-round magazine. Semi-complete DIY upper kit format allows customization, with handguard required to finish the assembly. Specs Brand: Alexander Arms Manufacturer Part Number: KIT50 UPC: 819511021059 Product Type: Upper Parts Kit / Semi-Complete Upper Kit Caliber: 50 Beowulf Firearm Fit: AR-15 Gun Platform: AR-Style Barrel Length: 16 inches Barrel Finish: Black Twist Rate: 1:20 Thread Pattern: 49x64-20 TPI Receiver Material: Aluminum Receiver Finish: Black Capacity: 7 rounds Sights: Optic Ready Included Components: Complete upper receiver, charging handle, gas block, dowel pins, gas tube, complete BCG with bolt, thread protector, one 7-round magazine Additional Note: Requires handguard to complete Product Weight: 4.8 lbs 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.