Brownells Brn-4 5.56Mm 10.4'' Med Bbl Complete Upper W/9'' Handguard

Imagine unleashing exceptional precision and unrivaled performance in a compact form factor. The Brownells BRN-4 5.56mm Complete Upper system isn't just designed for the range—it's engineered for every tactical scenario you might encounter. With an expertly crafted 10.4-inch barrel, this complete upper brings the excitement of the field directly to your AR-15 platform, transforming it into a powerful tool for both sport shooting and home defense. No matter your level of experience, this upper offers a user-friendly solution for building your ideal firearm with all-new components included.

Each upper receiver is a testament to precision engineering, featuring a robust billet construction that mimics the profiles of traditional forged receivers. The anodized matte black finish not only enhances aesthetics but also provides superior durability against harsh weather conditions and heavy use. Coupled with a nitride-finished Bolt Carrier Group, you gain both slick action and reliability under adverse conditions, ensuring that when you squeeze the trigger, every shot counts. Whether you’re a competitive shooter, a dedicated home defender, or an aspiring enthusiast, this upper presents the opportunity for unmatched performance.

Equipped with a high-quality 9-inch Midwest Industries handguard, the BRN-4 offers ample MLOK attachment points for customizing your preferred accessories. Rails will let you add optics or grips for enhanced control, increasing versatility for all scenarios. The option of a medium or heavy profile barrel allows for optimal performance whether you favor rapid fire or precision long-distance shooting. This diverse adaptability is perfect for beginners looking to fine-tune their skills or seasoned veterans who demand peak functionality from their gear.

Brownells ensures rigorous quality standards with every completed assembly, including test firing to guarantee flawless operation right out of the box. This meticulous attention to detail means you're not just buying a product—you're a part of a community that values excellence. By using newly manufactured, quality 5.56x45mm NATO ammunition, you unlock its maximum potential, ensuring your adventures with the BRN-4 will be memorable, effective, and thoroughly enjoyable. Get ready to elevate your shooting experience—this upper is your key to unlocking unparalleled capabilities!

Key Features

• Complete upper assembly for AR-15 platform
• Includes handguard, muzzle device, barrel, and gas system
• Precision-engineered bolt carrier group with nitride finish
• Available barrel profiles: medium and heavy
• MLOK attachment points and full-length picatinny rail on handguard

Technical Specifications

What's in the Box

• Brownells BRN-4 Complete Upper
• Midwest Industries Handguard
• Muzzle Device
• Mil-spec Charging Handle

Compatibility & Requirements

• Requires AR-15 lower receiver
• Recommended H1 or H2 recoil buffer with carbine recoil spring

Dimensions & Weight