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The Brownells .450 Bushmaster AR-15 barrel is a great addition to any AR build collection, giving you all of the performance you need out of a barrel that won't break the bank. The Brownells .450 Bushmaster AR-15 barrel features a button-rifled design that is machined from stress-relieved 4150 GBQ mil-spec steel, using a common .875-inch gas-block journal that's compatible with many aftermarket components.

• Features 1:16 rate of twist
• Threaded for suppressor use
• 11/16x24 muzzle thread pitch
• Includes nitride coating for corrosion resistance
• Machined with 11-degree target crown

The Brownells .450 Bushmaster AR-15 barrel is magnetic particle inspected for quality assurance and is completely made in the USA. The barrel ships with a bolt and 3-port muzzle brake.

See all of our AR15s and AR15 parts here.