The Faxon Firearms 6.5 Grendel Barrel (brand part no. 15BG8M18NGQ-5R-NP3) is an 18-inch Gunner-profile barrel built to stretch the 6.5 Grendel cartridge’s effective range on an AR-15 platform, finished in a durable nitride coating for corrosion resistance. Faxon’s Gunner profile balances weight against barrel stiffness better than a lightweight-contour barrel, which matters for a mid-to-long-range cartridge like 6.5 Grendel where barrel harmonics affect group consistency. A mid-length gas system paired with a .750 gas block keeps the action running smoothly, and an 11-degree target crown at the muzzle protects accuracy from the kind of crown damage that ruins group size over time. The barrel ships threaded for a muzzle device and uses a 1:8 twist to stabilize the heavier bullet weights common in 6.5 Grendel loads.

Key Specifications

• Chambered in 6.5 Grendel.
• Measures 18 inches in Faxon’s Gunner profile.
• 1:8 twist rate stabilizes heavier 6.5 Grendel bullet weights.
• Finished in nitride for corrosion resistance.
• Uses a mid-length gas system with a .750 gas block diameter.
• Ships threaded for a muzzle device.
• Machined with an 11-degree target crown to protect accuracy at the muzzle.
• Not fluted; a solid, unfluted profile for consistent barrel harmonics.
• Built as a genuine AR-15 accessory barrel, drop-in compatible with standard AR-15 upper receivers.

Frequently Asked Questions

What gas system length does this use? Mid-length, with a .750 gas block diameter.

Does this barrel come threaded? Yes, it ships threaded and ready for a muzzle device.

Why does the target crown matter? An 11-degree target crown protects the muzzle from the kind of damage that degrades accuracy over the barrel’s life.

Buy the Faxon Firearms 6.5 Grendel AR-15 Barrel, 18in

Stretch your Grendel build’s effective range with a purpose-built barrel. Order the Faxon Firearms barrel from our AR15 barrels selection at our Lubbock, Texas gun shop for fast, direct shipping.