Barrels
Proof Research Barrels
Carbon-fibre-wrapped stainless barrels. Roughly a third lighter than a steel barrel of the same contour, and the reason a precision-profile rifle can still be carried.
Current barrels
| Model | Lengths | Profile | Gas system | Twist | Material |
|---|---|---|---|---|---|
| AR-15 Carbon Fiber 16" | 16in | Carbon-wrapped | Mid-length | 1:8 | Carbon fibre over 416R |
| AR-15 Carbon Fiber 18" | 18in | Carbon-wrapped | Rifle-length | 1:8 | Carbon fibre over 416R |
| AR-10 Carbon Fiber 20" | 20in | Carbon-wrapped | Rifle-length | 1:10 | Carbon fibre over 416R |
Line-up checked against the manufacturer's catalogue. Checked 2026-08-01