The Black Rain Ordnance Carnivore 450 Bushmaster AR-15 Upper (brand part number CARNIVORE450B) is a complete 16-inch upper built around the big-bore .450 Bushmaster cartridge for shooters who want serious knockdown power on an AR-15 platform. Black Rain Ordnance built the Carnivore line for hunters and big-game shooters who want AR-15 ergonomics with a cartridge that hits far harder than 5.56 or .308. Since it’s a complete upper, it drops onto any mil-spec AR-15 lower without requiring an FFL transfer. Whether you’re chasing hogs or deer, the Carnivore gives you a fast-handling, semi-auto platform in a caliber built for it.

Key Specifications

• Chambered in .450 Bushmaster.
• Barrel measures 16 inches.
• Barrel is machined from 4150 chromoly steel and finished in salt-bath nitride for corrosion resistance and long service life.
• Runs a direct impingement gas system for reliable, straightforward operation.
• Wrapped in a 15-inch M-LOK free-float handguard for accessory mounting without touching barrel harmonics.
• Ships with Black Rain Ordnance’s Tank Brake muzzle device installed to help tame recoil from the big-bore cartridge.
• Part of Black Rain Ordnance’s Carnivore big-bore upper line.
• Built as a complete AR-15 upper, drops onto any mil-spec lower.

Frequently Asked Questions

What caliber is this upper chambered in? .450 Bushmaster.

Does this upper require an FFL transfer? No, a complete upper alone is not a regulated firearm and does not require FFL transfer; it drops onto any mil-spec AR-15 lower.

Buy the Black Rain Ordnance Carnivore 450 Bushmaster AR-15 Upper

Black Rain Ordnance built the Carnivore for shooters who want AR-15 speed and ergonomics with the stopping power of a true big-bore cartridge. It’s a strong choice for hog and deer hunters running a semi-auto platform. Shop more Black Rain Ordnance parts or browse our full AR-15 uppers selection to complete your build. Order it from our Lubbock, Texas gun shop, ready to ship as soon as it’s available.