Brn-180s Ar-15 10'' 300blk Upper Receiver Assembly

The BRN-180S AR-15 10'' 300 Blackout Upper Receiver Assembly from Brownells is designed for operators who require a compact platform for short-range engagements. This upper receiver is ideal for law enforcement tactical teams, military special operations personnel, and civilian shooters who prioritize reliability and portability in confined spaces. The 300 Blackout cartridge is particularly effective in this configuration, especially when using subsonic ammunition.

Built on proven AR-15 ergonomics, the BRN-180S upper assembly features a 10-inch barrel optimized for 300 Blackout ballistics, ensuring consistent performance with both supersonic and subsonic loads. The modular design allows for easy installation on any mil-spec AR-15 lower receiver, maintaining the platform's renowned customization flexibility. This assembly is constructed to meet high manufacturing standards, ensuring tight tolerances and quality control.

The BRN-180S upper receiver is perfect for operators looking to build dedicated 300 Blackout AR-15 platforms for various applications, including home defense and vehicle storage. Its balanced weight of 4.69 lbs helps reduce shooter fatigue during extended use while maintaining structural integrity for reliable cycling and accuracy. This upper receiver assembly is a versatile choice for anyone seeking a compact and effective firearm solution.