Radian Weapons R0435 Builder Kit, 8.5″ M-LOK Handguard

The Radian Weapons R0435 Builder Kit is a compact AR-15 receiver and parts set configured with an 8.5" M-LOK handguard and a Radian Grey finish. The kit ships with a billet upper receiver fitted with a dust cover and lightweight forward assist, plus a largely complete set of lower parts and ambidextrous controls. It is presented as a multi-caliber receiver set suitable for builders assembling a compact AR-15 platform.

Key Specifications

• This builder kit is designated R0435.
• The handguard supplied is a 8.5-inch M-LOK unit.
• The exterior finish is listed as Radian Grey.
• The upper component is a billet upper receiver with dust cover and lightweight forward assist installed.
• The kit includes a lower receiver as part of the set (see notes regarding model identifiers).
• The charging handle included is a Raptor-SD ambidextrous unit.
• Controls included are ambidextrous safety, bolt catch/release, and magazine release.
• Additional hardware includes enhanced takedown pin set, aluminum barrel nut, barrel nut wrench, and handguard mounting hardware.
• The product description lists this as multi-caliber, with no specific calibers provided.
• The item is categorized for an AR-15 platform.

This builder kit compiles core components and controls for a compact AR-15 assembly, emphasizing ambidextrous operation and modular M-LOK accessory compatibility. The parts set is arranged to support customization and straightforward integration into common AR-15 builds while providing hardware for handguard installation and receiver assembly.