Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5" Hvy Bbl Complete Upper W/13.5" Handguard
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Overview
The Brownells BRN-4(R) Complete Upper Receiver features a 14.5-inch heavy barrel chambered in 5.56 NATO, designed to deliver reliable performance and accuracy for your AR-15 build. This complete upper assembly comes ready to mount, ensuring a straightforward installation process while maintaining compatibility with standard lower receivers. It is commonly found in builds focused on the 5.56 NATO caliber, making it a solid choice for those looking to create a versatile and dependable firearm.
Specifications
Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5" Hvy Bbl Complete Upper W/13.5" Handguard
Available Merchants(1)
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Stock Alert
Price and stock
The Brownells Brn-4(R) Complete Upper Receivers - Brn-4 5.56mm 14.5" Hvy Bbl Complete Upper W/13.5" Handguard was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $1,371.99 at Brownells for when it comes back.
Prices checked · refreshed daily across 37 retailers
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