The Alexander Arms .50 Beowulf Tactical Upper (brand part number UTA50) is a complete 16-inch upper receiver assembly built around the big-bore .50 Beowulf cartridge that put Alexander Arms on the map. Finished in black anodize with an Alexander Arms branded handguard thread protector, this upper drops onto a compatible AR-15 lower to deliver hard-hitting, close-range terminal performance well beyond what any 5.56 or .223 upper can offer. This is an upper receiver assembly only, with no lower receiver included.

Key Specifications

• Chambered in .50 Beowulf, Alexander Arms’ signature big-bore cartridge for close-range stopping power.
• Barrel length measures 16 inches, clearing the federal rifle minimum with no NFA paperwork required.
• Rate of twist is 1:20, the rate matched to .50 Beowulf’s large-diameter, straight-wall bullet design.
• Finish is black anodized, a durable, low-maintenance finish for a hard-use upper.
• Includes an Alexander Arms branded thread protector on the handguard for muzzle end protection during transport.

Frequently Asked Questions

Is this a complete rifle? No, this is an upper receiver assembly only with no lower receiver included. It ships without an FFL transfer and needs a compatible AR-15 lower to complete a rifle.

Will this fit a standard AR-15 lower? Yes, .50 Beowulf uppers are built to run on a standard AR-15 lower receiver; only the bolt and magazine are caliber-specific.

Does the 16-inch barrel length have any NFA restrictions? No. At 16 inches, this barrel meets the federal minimum rifle barrel length, so no ATF paperwork is required to build with it.

Buy the Alexander Arms .50 Beowulf Tactical Upper

This upper will ship as soon as it’s available from a Lubbock, Texas gun shop for your next big-bore AR build. Browse more complete uppers in our AR15 uppers selection.