Radical Firearms RF Upper Assembly 10.5in 5.56 M4 Contour 1/7 Twist 10in RPR M-LOK A2 Flash Hider Black
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Radical Firearms
Overview
The Radical Firearms RF Upper Assembly features a 10.5-inch barrel chambered in 5.56 NATO, making it a compact and versatile option for AR-15 builds. With a 1:7 twist rate, this upper assembly is designed to stabilize a wide range of bullet weights, which can enhance accuracy and performance. Commonly found in shorter, tactical builds or pistols, this assembly is ideal for those looking to create a lightweight yet effective firearm setup.
Specifications
Radical Firearms RF Upper Assembly 10.5in 5.56 M4 Contour 1/7 Twist 10in RPR M-LOK A2 Flash Hider Black
Available Merchants(1)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Radical Firearms RF Upper Assembly 10.5in 5.56 M4 Contour 1/7 Twist 10in RPR M-LOK A2 Flash Hider Black to a build in April 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 $296.10 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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