The Proof Research PR15 6.5 Grendel 18" Carbon Fiber Barrel, Rifle-Length Gas, Stainless/Carbon Finish brings match-grade performance to the AR-15 platform in a lightweight, modern package. Built around a 416R stainless steel core and wrapped in aerospace-grade carbon fiber, this 18-inch, 1:8 twist, 5/8-24 threaded barrel is tuned with a caliber-matched rifle-length gas system to deliver smooth cycling and consistent accuracy while shedding significant weight compared to traditional steel barrels.
This barrel is ideal for building a precision-focused AR-15 in 6.5 Grendel for hunting, long-range range work, or dedicated training. The .750 gas block journal works with common low-profile gas blocks, while the carbon fiber wrap promotes rapid heat dissipation to keep the barrel cooler during extended strings of fire. Shooters who want to take full advantage of the 6.5 Grendel cartridge with suppressors or advanced muzzle devices will appreciate the balance of accuracy, durability, and handling that reflects Proof Research’s reputation for advanced materials and meticulous craftsmanship.
- Manufacturer: Proof Research
- Model: PR15 6.5 Grendel Carbon Fiber Barrel
- Barrel Length: 18 Inches
- Twist Rate: 1:8
- Muzzle Thread: 5/8-24
- Gas System Length: Rifle
- Gas Block Journal Diameter: 0.750 Inch
| __Material | 416R Stainless Steel, Carbon Fiber |
| __Twist Rate | 1:8 |
| __Rifling | Other |
| __Barrel Length | 18.00" |
| __Capacity | NA |
| __Optic Footprint | NA |
| __Action | NA |
| __Model | PR15 6.5 Grendel Carbon Fiber Barrel |
| __Caliber | 6.5 Grendel |
