Brownells BRN-15 5.56MM 16'' BBL .625'' GAS BLOCK UPPER RECEIVER 4027-3410-B2

Brownells BRN-15 5.56mm 16'' Barrel Upper Receiver .625 Gas Block Brownells BRN-15 5.56mm 16'' Barrel Upper Receiver with .625'' Gas Block The Brownells BRN-15 5.56mm 16'' Barrel Upper Receiver with .625'' Gas Block (4027-3410-B2) is a complete, ready-to-install upper receiver assembly designed for the BRN-15 platform. This high-quality upper features a 16-inch barrel chambered in 5.56 NATO paired with a .625-inch gas block, making it an excellent choice for building a reliable and accurate AR-15 style rifle. Complete Upper Receiver Assembly This BRN-15 upper comes fully assembled with the barrel, gas block, gas tube, and upper receiver. It is designed to drop onto any standard AR-15 lower receiver, allowing builders to quickly complete a functional rifle without sourcing individual components. 16-Inch Barrel The 16-inch barrel provides an excellent balance between velocity, maneuverability, and legal compliance. This length delivers strong ballistic performance from the 5.56 NATO cartridge while keeping the overall rifle compact and easy to handle for a wide range of applications. .625'' Gas Block This upper is equipped with a .625-inch diameter gas block, a common size that offers broad compatibility with many popular handguards and rail systems. The gas block is properly aligned and secured for reliable gas system function and consistent performance. Key Features of the Brownells BRN-15 Upper Complete BRN-15 upper receiver assembly 16-inch 5.56 NATO barrel .625'' gas block Ready to install on standard AR-15 lowers Part number: 4027-3410-B2 High-quality construction and finish Benefits for AR-15 Builders The Brownells BRN-15 16'' upper receiver offers a convenient and reliable solution for builders. By providing a matched barrel, gas block, and upper receiver, it eliminates the need for headspacing and gas system alignment, saving time and ensuring consistent performance right out of the box. Recommended Applications General purpose AR-15 builds Custom rifle configurations Range and recreational shooting Home defense rifles Professional gunsmithing projects Why Choose Brownells BRN-15 Components? Brownells is a trusted name in the firearms industry for high-quality AR-15 parts. The BRN-15 series is manufactured with attention to detail and consistency, ensuring reliable performance and proper fitment. This complete upper receiver assembly delivers excellent value for builders who want quality components without the hassle of individual part selection. Technical Specifications Brand: Brownells Model: BRN-15 Caliber: 5.56 NATO Barrel Length: 16 inches Gas Block Diameter: .625'' Part Number: 4027-3410-B2 Build Your BRN-15 Rifle The Brownells BRN-15 5.56mm 16'' Barrel Upper Receiver with .625'' Gas Block is a premium choice for anyone looking to build a reliable and accurate AR-15. With its complete assembly and quality components, this upper provides a strong foundation for your next rifle build. Pair it with your choice of lower receiver, stock, and handguard to complete your custom BRN-15. The End