Radical Firearms Complete Upper Assembly for 300 Blackout 16" 1:8 Twist, Black - CFU16-300HBAR-15RPR
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Radical Firearms
Overview
The Radical Firearms Complete Upper Assembly is designed specifically for the AR-15 platform, featuring a 16-inch barrel chambered in 300 Blackout with a twist rate of 1:8. This configuration allows for optimal stabilization of a range of bullet weights, making it suitable for both subsonic and supersonic loads. Constructed from durable 7075-T6 aluminum, this upper assembly is finished in black and is commonly utilized in pistol builds tailored for the 300 Blackout caliber.
Specifications
Radical Firearms Complete Upper Assembly for 300 Blackout 16" 1:8 Twist, Black - CFU16-300HBAR-15RPR
Available Merchants(1)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Radical Firearms Complete Upper Assembly for 300 Blackout 16" 1:8 Twist, Black - CFU16-300HBAR-15RPR to a build in February 2026.
It was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $433.97 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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