Radian

Radian Weapons Model 1 Builder KIT Gray 5.56

All Radian lower receivers
Radian Weapons Model 1 Builder Kit Gray 5.56 - Lower Receiver for AR-15 - view 1
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Radian

Overview

The Radian Weapons Model 1 Builder Kit is a complete lower receiver assembly designed for the AR-15 platform, crafted from durable 7075-T6 aluminum. This kit features ambidextrous controls, making it suitable for both left- and right-handed shooters, and is finished in a sleek gray color that adds a modern touch to your build. Commonly found in 5.56 NATO builds, this lower receiver provides a solid foundation for a versatile and reliable rifle.

Specifications

MPNR0396
Caliber5.56 NATO
ColorGray
AssemblySet
PlatformAR-15
ControlsAmbidextrous
Material7075-T6 Aluminum
StyleBillet

Available Merchants(1)

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BattleHawk Armory
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$1,445
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September 2026 on GunPartPicker

Radian Weapons Model 1 Builder KIT Gray 5.56 ranked #248 of the 477 lower receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #382 of the 1,049 lower receivers builders have added.

Today the one retailer we track is out of stock. Listed prices start at $1,444.95 at BattleHawk Armory for when it comes back.

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Frequently Built With

The part most often added in each category by the builds that include this one

Midwest Industries AR-15 Combat Rifle Folding Sight Set

Midwest Industries AR-15 Combat Rifle Folding Sight Set

Iron Sights$150in 33% of them
Forward Controls Design AR-15 Augmented Bolt Catch / Release - Serrated - Rearward Biased

Forward Controls Design AR-15 Augmented Bolt Catch / Release - Serrated - Rearward Biased

Bolt Catch$59 · out of stockin 17% of them
Geissele Automatics Reliability Enhancement KIT - H2

Geissele Automatics Reliability Enhancement KIT - H2

Buffer$449in 17% of them
J P Enterprises AR-15 Scs for Law Folding Adapter H2 Buffer Weight

J P Enterprises AR-15 Scs for Law Folding Adapter H2 Buffer Weight

Buffer Spring$228in 17% of them
Bravo Company Manufacturing MK2 Recoil Mitigation System - Mod 1 - T2

Bravo Company Manufacturing MK2 Recoil Mitigation System - Mod 1 - T2

Buffer Tube$124in 17% of them
Guntec USA AR-15 Ultra Pistol Furniture Set w/ Milspec Buffer Tube Anodized Black

Guntec USA AR-15 Ultra Pistol Furniture Set w/ Milspec Buffer Tube Anodized Black

Buffer Tube Assembly$206 · out of stockin 17% of them

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Caliber

70.8%
5.56 NATO70.8%
300 Blackout8.3%
.223 Wylde8.1%
.308 Win4.9%
9mm2.7%
Other5.3%

Gas System

51.4%
Mid-Length51.4%
Carbine25.2%
Rifle11%
Pistol10.9%
Blowback1.2%
Other0.3%

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