300 AAC Blackout Rifle Uppers

The 300 BLK Rifle Upper Receiver is the ideal solution for building or upgrading your AR-15 with 300 Blackout. Designed for precision, it ensures reliable performance and seamless compatibility with Rock River components. This upper receivers crafted from high quality materials, ensuring durability and consistent accuracy in every shot.

It supports subsonic and supersonic ammunition, making it versatile for various shooting applications. Whether for hunting, tactical use, or recreational shooting, this upper receiver performs exceptionally in suppressed and unsuppressed setups. Its lightweight construction doesn’t compromise durability, maintaining balance and maneuverability.

Perfect for DIY builders and firearm enthusiasts, the 300 BLK Rifle Upper Receiver integrates easily with existing AR-15 platforms. It’s built to handle the demands of modern shooting while delivering exceptional results. Upgrade your AR-15 today and experience the power and precision of 300 Blackout.

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300 Blackout AR-15 Rifle Uppers

Enhance the versatility and performance of your AR-15 with a 300 Blackout rifle upper. These complete upper receivers or barreled upper assemblies provide a convenient and efficient way to transform your firearm into a capable 300 Blackout platform.

Choose from pistol-length, carbine-length, or mid-length uppers, depending on your desired configuration and shooting preferences. Suppressor-ready options come with threaded barrels and often feature low-profile gas blocks or adjustable gas systems, ensuring optimal performance when using a suppressor.

The choice of handguard is crucial, and options like Keymod, M-LOK, or Picatinny rail uppers provide versatile attachment points for accessories such as lights, lasers, and vertical grips. Free-floating handguards offer enhanced accuracy by eliminating barrel contact, ensuring consistent harmonics.

Consider the weight of the upper, with lightweight options being ideal for maneuverability and heavy barrel variants for increased stability and sustained fire. Stainless steel or nitride-coated barrels offer durability and corrosion resistance, while fluted barrels reduce weight and improve heat dissipation.

Short-barreled uppers are suitable for compact builds, while pistol-length gas systems and piston-driven uppers offer reliable operation. Side-charging or ambidextrous options cater to specific shooting preferences.

Optics-ready uppers allow for easy installation of various sights, from flip-up iron sights to holographic or red dot sights. Some uppers are specifically designed for subsonic ammunition, making them ideal for suppressed shooting or hunting applications.

Choose between forged or billet upper receivers, both offering durability and reliability.

Upgrade your AR-15 with a high-quality 300 Blackout rifle upper, tailored to your specific needs. With a wide range of options available, you can find the perfect upper to optimize your shooting experience, whether it's for hunting, home defense, or competition shooting.

Rifle Barreled Uppers Chambered in 300 AAC BLK

The 300 Blackout AAC Rifle Assembled Upper Receivers come in 16" Barrel Length.  Also, with option for stainless steel or 4150 with Nitride finish barrel.  Along with the 300 Blackout Upper, we also have a variety of Handguards and different finishes.  Available Handguard Lengths on the 300 blackout upper include: 10" - 12" - 15".  The 300 Rifle Upper receiver and handguard come in a variety of colors including: Black, Flat Dark Earth, Burnt Bronze, OD Green, Zombie Green, Tungsten Grey and Titanium Blue.

Daytona Tactical test fires every 300 Blackout Barreled custom upper to verify cycling.