The Alexander Arms KIT5012 Upper Kit 50 Beowulf 12" is a compact big-bore upper designed to drop onto a compatible AR-15 lower and deliver serious performance in a short package. Built around a 12-inch .50 Beowulf barrel with a threaded muzzle, this complete upper assembly offers clean function and straightforward integration for shooters looking to add heavy-hitting capability to their existing rifle platform.

This upper kit is well suited for range use, hunting where a short, maneuverable setup is preferred, and general big-bore experimentation for enthusiasts who want more energy than standard intermediate calibers. The 12" barrel balances handling and ballistic performance, while Alexander Arms’ engineering and attention to detail provide reliable cycling and consistent accuracy from a trusted name in modern AR systems.

Key Features:

• Manufacturer: Alexander Arms
• Model: KIT5012 Upper Kit 50 Beowulf 12"
• Caliber: .50 Beowulf (12.7x42mm)
• Barrel Length: 12"
• Thread Pattern: 49/64-20
• Series: Upper Kit
• AR-15 Accessory: Yes
• Weight: 4.13 lbs
• Width: 4.9"
• Length: 24.3"
• Height: 4.5"