Proof Research Barrel Carbon Fiber .300 Blackout 16 Barrel for AR15
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Proof Research
Overview
The Proof Research Carbon Fiber Barrel for .300 Blackout is a 16-inch barrel designed for the AR-15 platform, offering a lightweight solution without compromising on performance. The .300 Blackout caliber is well-suited for versatility in both supersonic and subsonic loads, making it ideal for a range of applications from hunting to tactical use. This barrel is commonly found in builds aimed at maximizing accuracy and efficiency in compact configurations.
Specifications
Proof Research Barrel Carbon Fiber .300 Blackout 16 Barrel for AR15
Available Merchants(4)
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Build history on GunPartPicker
Builders on GunPartPicker first added the Proof Research Barrel Carbon Fiber .300 Blackout 16 Barrel for AR15 to a build in March 2026.
It was hard to find in September 2026, in stock on only 3 of the 20 days we checked, and today 2 of the 4 retailers we track have it in stock. The best price crept up from $899 to $999 over September 2026. Buying today, the lowest price is $999 at Optics Planet, above September's low of $899, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Builds Featuring This Part
See all 1 →Builds in the community that include the Proof Research Barrel Carbon Fiber .300 Blackout 16 Barrel for AR15
| Build | Parts | Total |
|---|---|---|
 | 14 | $12845.16 |
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