The Proof Research 6.5 Grendel 1-8 Twist 20" Carbon Fiber Barrel brings match-grade precision to the AR-15 platform in a lightweight, modern package. Built around a 416R stainless steel core wrapped in advanced carbon fiber, this 20-inch, threaded barrel is engineered to deliver consistent accuracy while dramatically reducing overall rifle weight.
This medium-profile barrel is optimized for the 6.5 Grendel cartridge, offering a 1:8 twist rate, 5/8-24 muzzle threads, and compatibility with rifle-length gas systems and .875-inch gas blocks. Its carbon fiber construction improves heat dissipation, minimizes point-of-impact shift during extended strings of fire, and reduces harmonic vibration for more predictable shot placement. Ideal for precision-oriented range use, competition, and hunting where a lighter rifle is an advantage, this barrel reflects Proof Research’s reputation for innovation and meticulous craftsmanship.
- Manufacturer: Proof Research
- Model: 6.5 Grendel 1-8 Twist 20" Carbon Fiber Barrel
- Caliber: 6.5 Grendel
- Barrel Length: 20 Inches
- Twist Rate: 1:8
- Muzzle Threads: 5/8-24
- Gas System Length: Rifle
| __Barrel Length | 20.00" |
| __Model | 100509 |
| __Capacity | NA |
| __Optic Footprint | NA |
| __Action | NA |
| __Caliber | 6.5 Grendel |
