Faxon Firearms 18" 1:8 5R Big Gunner Blkfaxon Ar10 Bbl 6.5 Cm
$265.88
$328.00
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The Faxon Firearms 18" Big Gunner 6.5 Creedmoor AR-10 barrel is built for shooters who want accuracy without sacrificing handling. This 6.5 Creedmoor barrel combines a smart profile design with tough nitride coating to deliver precision on long-range hunts, competition stages, and the range. Machined from triple stress-relieved 416R stainless steel, it's engineered to run cool and stay accurate through strings of fire.
The Big Gunner profile is where Faxon's design smarts shine. It tapers like a government profile from the extension back to the gas block, then transitions to a pencil profile toward the muzzle. This isn't just splitting the difference—it's strategic weight removal that tames muzzle whip while keeping the rigidity where it matters, at the rear where heat and recoil forces are highest. That design also shifts your rifle's balance rearward, making an 18" barrel feel noticeably more maneuverable in the field or from a bench.
Faxon's 5R rifling and 1:8 twist rate stabilize 6.5 Creedmoor loads across a wide range of bullet weights while making bore cleaning straightforward. The QPQ Nitride finish—applied inside and out—resists wear and corrosion without adding bulk. The barrel arrives with an 11° target crown and a 5/8"-24 threaded muzzle, ready for your suppressor, brake, or flash hider. Each barrel is individually headspaced and tested before it ships, so you can build with confidence.
Fits DPMS LR-308 pattern upper receivers and runs standard rifle-length gas tubes, making it a drop-in choice for AR-10 builds.
Key Features
- 18" barrel length balances sight radius, velocity, and maneuverability
- Big Gunner profile reduces muzzle whip while maintaining rear-end rigidity for accuracy
- Triple stress-relieved 416R stainless steel for thermal stability and longevity
- 5R rifling with 1:8" twist for 6.5 Creedmoor accuracy and easy cleaning
- QPQ Nitride finish (inside and out) for wear and corrosion resistance
- 5/8"-24 threaded muzzle ready for suppressors and muzzle devices
- 11° target crown for consistent bullet seating
- Compatible with DPMS LR-308 pattern uppers
- Individually headspaced and tested
Specifications
| Caliber | 6.5 Creedmoor |
| Length | 18" |
| Twist Rate | 1:8" |
| Rifling | 5R |
| Material | 416R Stainless Steel (triple stress-relieved) |
| Finish | QPQ Nitride (matte black) |
| Muzzle Thread | 5/8"-24 |
| Crown | 11° target |
| Platform | DPMS LR-308 pattern |
| Gas System | Standard rifle-length |
Frequently Asked Questions
Will this barrel fit my AR-10 upper?
Yes, if your upper follows the DPMS LR-308 pattern. This barrel is designed as a drop-in for that standard and uses a rifle-length gas tube.
What ammunition does the 1:8 twist rate stabilize?
The 1:8" twist is the standard for 6.5 Creedmoor and handles the full range of bullet weights commonly loaded in that cartridge. Faxon's 5R rifling also makes throat fouling less of an issue, so cleaning between sessions is easier.
Can I put a suppressor on this barrel?
Yes. The muzzle is threaded 5/8"-24, which is the standard suppressor thread for rifles in this caliber and size class. Any 5/8"-24 suppressor or muzzle device will fit.
How does the Big Gunner profile affect accuracy and handling?
The profile removes weight from the front of the barrel to reduce muzzle whip and keep your rifle balanced, while retaining stiffness at the rear where thermal and recoil forces matter most. This design improves both accuracy potential and maneuverability compared to a straight government or pencil profile.
