Radian Weapons R0903 Model 1 Complete Upper 6mmARC Black Nitride Steel
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Radian
Overview
The Radian Weapons R0903 Model 1 Complete Upper is designed specifically for the 6mm ARC caliber, providing builders with a complete assembly that integrates seamlessly with the AR-15 platform. This upper receiver features a black finish, ensuring a sleek and functional appearance while maintaining durability. It's particularly suited for builds focused on the 6mm ARC caliber, making it an excellent choice for those looking to optimize performance for precision shooting or hunting applications.
Specifications
Radian Weapons R0903 Model 1 Complete Upper 6mmARC Black Nitride Steel
Available Merchants(4)
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Build history on GunPartPicker
Builders have been adding the Radian Weapons R0903 Model 1 Complete Upper 6mmARC Black Nitride Steel to their builds on GunPartPicker since February 2026. All time, it ranks #905 of the 1,636 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 3 of the 4 retailers we track have it in stock. Prices barely moved in August 2026, holding around $2,169.95, so there haven't been real sales lately. Buying today, the lowest price is $2,169.95 at Optics Planet, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 6 builds that include this one
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Geissele Automatics Super Semi-Automatic Enhanced SSA-E Two Stage AR-15 Trigger
Radian Weapons Raptor-SD Ambidextrous AR-10/SR-25 Charging Handle, Black - R0012
EOTECH EXPS3-2 HWS and G43 Magnifier
Troy Industries AR-15 Flip-Up 45 Degree Offset Sight Set Black
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 1 →Builds in the community that include the Radian Weapons R0903 Model 1 Complete Upper 6mmARC Black Nitride Steel
| Build | Parts | Total |
|---|---|---|
 | 6 | $3850.88 |
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