Radian Model 1 A-DAC15 Builder Kit, AR-15 Billet Receiver Set with 15.5 in M-LOK Handguard, FDE (R0406)
This Radian Model 1 A-DAC15 Builder Kit is a factory-new, color-matched FDE receiver set with a free-float M-LOK handguard and a fully ambidextrous control suite. Built from billet aluminum in Oregon, USA, it features Radian's ADAC mechanism that integrates the magazine release with bolt hold-open capability, plus a flat-top Picatinny upper and a lower marked MULTICAL. It ships as a builder kit without a barrel, trigger, bolt carrier group, or magazine.
Condition
Overall Condition: Factory new condition, unfired with no signs of handling. Includes all accessories and paperwork in the original factory box/case.
Bore Condition: No barrel is included with this builder kit.
Specific Condition Details: There are practically no handling marks. This builder kit does not include a barrel, trigger, or bolt carrier group.
What’s Included
- Radian Builder Kit manual
- Radian barrel nut wrench
- Radian Builder Kit factory box with fitted foam
- Radian logo stickers
- Radian Accessories small parts bags (hardware)
The billet-machined aluminum receiver set includes an integral trigger guard and a flared magwell, providing a precise, rigid foundation for an AR-15 build. The lower is marked MULTICAL, and controls are fully ambidextrous to accommodate right- and left-handed operation.
The upper features a flat-top Picatinny rail, and the approximately 15.5-inch free-float aluminum M-LOK handguard adds modular mounting with a segmented top rail. The handguard length supports extended sight radius setups and accessory placement while keeping the barrel free-floated.
Radian's ADAC system integrates the magazine release with bolt hold-open functionality, enhancing administrative handling and control manipulation. The ambidextrous magazine release and related controls are engineered into the receiver set rather than added as external accessories.
This is a true builder kit: it is supplied without a barrel, trigger, bolt carrier group, or magazine, allowing the end user to select each component. The parts are finished in color-matched FDE, and the kit is manufactured in the USA with the Radian attention to fit and finish. MPN R0406.