The Proof Research PR15 Carbon Fiber AR-15 Barrel, 6mm ARC, 18" Threaded, Carbon Fiber/Stainless is a lightweight, match-grade barrel built for shooters who want carbon fiber performance without sacrificing reliability. Its 18-inch carbon fiber wrapped 416R stainless steel core, 1:7.5 twist rate, and 5/8x24 threaded muzzle deliver excellent stability for modern 6mm ARC loads while keeping overall weight to just 1 pound 14 ounces.
This PR15 barrel uses a Rifle +1 gas system and a .750 inch gas journal diameter, making it an easy upgrade for AR-15 builders seeking smoother cycling and reduced recoil. Ideal for precision-focused range work, competition, and hunting where a lighter front end matters, it offers consistent accuracy and improved heat dissipation. Proof Research’s meticulous manufacturing and carbon fiber expertise result in a barrel that balances durability, precision, and handling.
- Manufacturer: Proof Research
- Model: PR15 Carbon Fiber AR-15 Barrel
- Caliber: 6mm ARC
- Barrel Length: 18 inches
- Barrel Twist Rate: 1:7.5
- Gas System Length: Rifle +1
- Gas Block Journal Diameter: 0.750 inches
| __Material | 416R Stainless Steel, Carbon Fiber |
| __Twist Rate | 1:7.5 |
| __Rifling | Other |
| __Caliber | 6mm ARC |
| __Barrel Length | 18.00" |
| __Model | PR15 Carbon Fiber AR Barrel |
| __Capacity | NA |
| __Optic Footprint | NA |
| __Action | NA |
