Radian Weapons Model 1 Builder Kit | 15.5″ M-LOK | R0403

The Radian Weapons Model 1 Builder Kit pairs a billet upper receiver with a matching 15.5″ M-LOK handguard finished in Radian Black Cerakote for a precision-focused AR-15 build. Components are CNC machined and assembled with ambidextrous controls and accessory-ready provisions to suit informed builders and shooters. This kit is intended for custom builds and accuracy-focused range applications such as precision upper assemblies and competition or match-style setups.

Product Specifications

• The kit includes a billet upper receiver with 15.5″ M-LOK handguard as a matching set.
• The finish is specified as Radian Black Cerakote.
• The receiver is cut from 7075-T6 aluminum billet for structural strength.
• The handguard features Magpul M-LOK accessory mounting slots.
• The handguard attaches using four steel cross bolts coated in black nitride for corrosion resistance.
• The kit includes a dust cover and lightweight forward assist.
• The kit includes a Raptor-SD ambidextrous charging handle.
• The package includes a barrel nut and hardware for installation.
• The kit explicitly does not include a barrel or bolt carrier group.
• The receiver/kit is described as optic ready.
• The kit lists an item weight of 5.95 (unit as provided in source data).
• The UPC is 817093023867.

This builder kit supplies the core machined components and accessory-ready handguard for a high-quality AR-15 upper assembly. Its billet construction, ambidextrous controls, and M-LOK compatibility make it well suited for precision builds and competitive or range-focused setups where component quality and modularity matter.