This Radian Weapons Model 1 receiver set (brand part no. R0413) is a matched upper and lower receiver set built for multi-caliber AR-pattern rifle or pistol builds, finished in brown for builders who want a distinctive color option beyond standard black. Radian Weapons designed this set as a complete starting foundation, giving custom gun builders a matched pair ready to accept a wide range of barrels, bolt carrier groups, and furniture depending on the build.

Key Specifications

• Rated for multi-caliber compatibility across common AR platform chamberings.
• Includes a matched receiver set, upper and lower sold together.
• Finished in brown for a distinctive appearance.
• Runs a semi-automatic AR-pattern fire control layout.
• Weighs approximately 5.6 pounds as shipped.
• Packaged in a compact 4.9-by-12.8-inch retail box footprint.
• Ships in a compact 4.9-by-12.8-inch retail package.
• Model designation AX556 identifies this receiver set within the Radian lineup.
• Classified as an accessory receiver set, not a complete firearm.

Frequently Asked Questions

Does this kit include a barrel or bolt carrier group? No, this is a receiver set only, sold without a barrel, bolt carrier group, or trigger.

Is this set caliber specific? No, it is rated multi-caliber, giving builders flexibility in choosing a barrel and bolt to match their preferred chambering.

Why choose the brown finish? It offers a distinctive alternative to standard black for builders who want their rifle to stand out.

Buy the Radian Weapons Model 1 Receiver Set

Start a custom AR-pattern build with the Radian Weapons Model 1 (Radian Weapons), a matched receiver set in a distinctive brown finish. Browse more AR parts and order yours from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.