The Radian Model 1 Upper in Brown (brand part no. R0451) runs a 10.5-inch .223 Wylde barrel on Radian’s flagship upper platform, built around the same design philosophy as the company’s complete Model 1 rifles: top-tier raw materials, precise CNC machining, and the best components available. Every Model 1 upper is hand-assembled, inspected, test-fired, and cleaned by a trained gunsmith to personally guarantee it meets Radian’s rigid quality standard. This upper ships without a lower receiver, so it is not itself a complete firearm; a 10.5-inch barrel is well under the 16-inch federal minimum for a rifle-configured (shouldered) lower, so it should only be installed on a registered short-barreled rifle, an NFA-compliant braced pistol build, or a pistol-configured lower to stay compliant. Radian backs every Model 1 product with a lifetime guarantee.

Key Specifications

• Chambered in .223 Wylde, safely running both .223 Remington and 5.56 NATO ammunition.
• 10.5-inch barrel length.
• Built on Radian’s Model 1 upper platform.
• Fully ambidextrous controls for right- or left-handed shooters.
• Hand-assembled, inspected, and test-fired by a trained gunsmith before it ships.
• Backed by Radian’s lifetime guarantee.
• High-precision CNC-machined components throughout.
• Finished in Brown.
• Ships with an enhanced Black Nitride M16 bolt carrier group installed.
• Includes a Radian Raptor-SD suppressor-optimized ambidextrous charging handle.

Frequently Asked Questions

Does this upper include a lower receiver? No, it ships as an upper only. Federal short-barreled-rifle rules apply once a 10.5-inch barrel like this is mounted on a shouldered rifle lower, so pair it with a registered SBR, a braced pistol build, or a pistol-configured lower.

Is this upper backed by a warranty? Yes, Radian backs the entire Model 1 lineup with a lifetime guarantee.

Is this upper assembled by hand? Yes, every Model 1 upper is hand-assembled, inspected, and test-fired by a trained gunsmith before it ships.

Buy the Radian Model 1 10.5-inch Upper, .223 Wylde, Brown

Order it from our Lubbock, Texas gun shop as soon as it’s available to ship, and add a hand-built, lifetime-guaranteed .223 Wylde upper to your build. Shop more AR15 uppers from Radian Weapons.