Radian Model 1 Builder Kit 8.5″ Pistol Upper – Brown | 300 Blackout or 5.56 Custom Build

Build your dream AR pistol with the Radian Model 1 Builder Kit in a striking Brown finish. Engineered by Radian Weapons to the highest standards of precision and craftsmanship, this 8.5″ builder kit gives serious shooters and custom build enthusiasts the foundation for a truly exceptional firearm. The Radian Model 1 platform is defined by its uncompromising design philosophy: only the finest raw materials, the most precise CNC machining, and the best available components go into every single build.

Fully ambidextrous controls are standard on the Model 1, making this kit equally capable in the hands of left- or right-handed shooters — a thoughtful feature rarely executed this well at any price point. Each Radian component is hand-assembled by a trained gunsmith who personally inspects, test-fires, and cleans the build to ensure it meets Radian’s notoriously rigid quality standards. The result is a platform that seamlessly blends form and function, delivering match-grade performance in a package that turns heads on the range.

Backed by Radian’s industry-respected lifetime guarantee, this builder kit is a premium investment for competitive shooters, custom build enthusiasts, and discerning AR platform collectors who refuse to compromise.

Whether you’re ready to order online or want to talk through your custom build options with our knowledgeable staff, Deep Roots Rifle Co is here to help. Visit our gun store in Eustis, Florida, or shop online at deeprootsrifleco.com — your Radian build starts here.