Brownells BRN-4 5.56MM 10.4'' MED BBL COMPLETE UPPER W/9'' HANDGUARD BRN4-CU-10.4M

Brownells BRN-4 5.56mm 10.4" Complete Upper w/ 9" Handguard BRN4-CU-10.4M Brownells BRN-4 5.56MM 10.4'' Medium Barrel Complete Upper w/ 9'' Handguard BRN4-CU-10.4M The Brownells BRN-4 Complete Upper (BRN4-CU-10.4M) is a fully assembled, ready-to-install upper receiver designed for the Brownells BRN-4 platform. This complete upper comes with a 10.4-inch medium profile barrel and a 9-inch handguard, providing a compact and maneuverable configuration ideal for close-quarters use and modern tactical builds. Short-Stroke Piston Operating System The BRN-4 complete upper utilizes a reliable short-stroke piston system. This design keeps the action significantly cleaner by preventing carbon fouling from entering the receiver, resulting in improved reliability, reduced maintenance, and consistent performance even during high-volume shooting. 10.4-Inch Medium Barrel This upper features a 10.4-inch medium profile barrel chambered in 5.56mm. The medium barrel profile offers a good balance between weight and heat dissipation, making it well-suited for a compact build while maintaining solid accuracy and durability. 9-Inch Handguard The included 9-inch handguard provides ample rail space for mounting accessories while keeping the overall length of the rifle compact. Its length is well-matched to the 10.4-inch barrel, offering excellent ergonomics and accessory mounting options without unnecessary overhang. Key Features of the Brownells BRN-4 Complete Upper Complete assembled upper receiver 10.4-inch 5.56mm medium barrel 9-inch handguard included Short-stroke piston system Model Number: BRN4-CU-10.4M Common Applications BRN-4 and HK416-style builds Short-barreled rifle configurations Close-quarters tactical use Compact defensive and training rifles Users seeking a ready-to-install upper Benefits for BRN-4 Owners This complete upper offers a convenient, turnkey solution for building or upgrading a BRN-4 rifle. With the barrel and handguard already installed, it saves time and ensures proper fitment between components, delivering reliable performance right out of the box. Why Choose Brownells BRN Products? Brownells has developed the BRN-4 series to deliver reliable performance in the HK416 style. This complete upper reflects their commitment to producing high-quality, fully assembled components that meet the needs of serious shooters and professional users. Technical Specifications Brand: Brownells Model: BRN-4 Complete Upper Caliber: 5.56mm Barrel Length: 10.4 inches Barrel Profile: Medium Handguard Length: 9 inches Operating System: Short-Stroke Piston Part Number: BRN4-CU-10.4M BRN-4 10.4" Complete Upper with 9" Handguard The Brownells BRN-4 Complete Upper (BRN4-CU-10.4M) is a fully assembled piston-driven upper receiver featuring a 10.4-inch 5.56mm medium barrel and 9-inch handguard. Designed for the BRN-4 and HK416 platform, this complete upper delivers excellent reliability, reduced fouling, and a compact profile. Ideal for close-quarters builds and tactical applications, this ready-to-install upper provides a high-performance foundation for your BRN-4 rifle. The End