Description
Faxon's Match Series takes their reputation for value and cranks the precision up a notch. This 18-inch 6.5 Grendel barrel is machined in-house from 416R stainless bar stock and finished with 5R button rifling, a hybrid style that places lands opposite grooves and softens the sharp angles. The payoff is less jacket deformation, a bit more velocity, and a bore that wipes clean with far less effort. If you're putting together a Grendel upper meant to stretch rounds out past 500 yards, this is the kind of barrel that earns its keep.
What the Heavy Fluted Profile Does for a Grendel Build
The heavy fluted contour is the sweet spot between a bull barrel and a lightweight pencil profile. You get the rigidity of thicker steel for consistent shot-to-shot accuracy, but the deep straight flutes shave weight and add surface area to help the barrel shed heat on longer strings. At 1.81 pounds it balances well out front without feeling nose-heavy, which makes it a solid pick for both a precision bench gun and a 6.5 Grendel hunting rifle.
Chambering and Rifling Details on the Match 6.5 Grendel Barrel
This one is cut for the 6.5 Grendel Type II chamber and spun with a 1:8 twist, which stabilizes the long, high-BC 6.5mm projectiles the cartridge was designed around. It runs a mid-length gas system for a softer, more reliable impulse, uses a standard .750 gas block journal, and wears a recessed 11-degree target crown to protect the rifling and keep groups tight. The muzzle comes threaded 5/8-24 if you want to run a brake, comp, or suppressor.
Built to Last and Fit Right
Inside and out, the barrel gets a salt bath Nitride treatment that locks in the bore, extends barrel life, and fights corrosion. The M4-style barrel extension is Nickel Teflon coated for dry lubricity and a snug fit against your receiver, and every barrel is magnetic particle inspected before it ships. It's a serious upgrade for anyone chasing accuracy and durability out of the Grendel platform.
Key Specifications
- Manufacturer: Faxon Firearms
- MPN: 15BG8M18FHQ-5R-NP3
- UPC: 816341022126
- Caliber: 6.5 Grendel Type II
- Barrel Length: 18 inches
- Twist Rate: 1:8
- Rifling: 5R Button Rifled
- Barrel Material: 416R Stainless Steel
- Profile: Heavy Fluted
- Gas System: Mid-Length
- Finish: Salt Bath Nitride (QPQ), inside and out
- Muzzle Threads: 5/8-24
- Gas Block Journal Diameter: .750 inch
- Gas Block Journal Length: 1.1 inches
- Barrel Extension: M4, Nickel Teflon Coated
- Weight: 1.81 lbs
What’s Included
- Faxon Match Series 18" 6.5 Grendel Heavy Fluted Barrel (with M4 barrel extension installed)
Frequently Asked Questions
What twist rate does this Faxon 6.5 Grendel barrel use and why does it matter?
This barrel has a 1:8 twist, which is the standard for 6.5 Grendel. It's designed to stabilize the long, heavy, high-BC 6.5mm bullets the cartridge is built around, so you'll get solid accuracy across common factory and match loads out to distance.
Is the muzzle on this barrel threaded?
Yes. The muzzle comes threaded 5/8-24, which is the typical pitch for 6.5 Grendel and larger-caliber AR builds. That lets you mount a muzzle brake, compensator, flash hider, or a suppressor.
What gas system and gas block size does the Match Series 18" Grendel barrel use?
It runs a mid-length gas system, which gives a softer, more consistent recoil impulse than a carbine-length setup on an 18-inch barrel. The gas block journal is the standard .750 diameter, so most common gas blocks will fit.
What makes the heavy fluted profile a good choice for this 6.5 Grendel barrel?
The heavy fluted profile keeps the rigidity of a thicker contour for accuracy while the deep flutes trim weight and add surface area for better heat dissipation. At 1.81 pounds it strikes a nice balance, making it a strong option for both a precision rig and a lighter-handling hunting build.





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