Description
The 22 ARC is one of the more exciting things to hit the AR-15 platform in years, and this Shaw barrel is a clean way to build one without starting from scratch. Cut from 416R stainless steel with a bead blast matte finish, it measures 18 inches and rides an HBAR contour, so you get the rigidity for accuracy without the barrel-heavy feel of a full bull profile. The spiral fluting isn't just for looks either. It trims weight and adds surface area to help heat bleed off during longer strings.
What the 22 ARC Brings to Your AR-15
Hornady designed the 22 ARC to squeeze .22-250 style performance out of the AR-15, and it delivers thanks to modern, high-ballistic-coefficient bullets in the 62 to 80 grain range. The 1:7 twist on this Shaw barrel is exactly what those heavier, longer projectiles want, keeping them stable well past the point where a lazy twist would fall apart. That translates to a flat trajectory, strong wind bucking, and reliable accuracy on prairie dogs, coyotes, and steel out to 500 yards and beyond.
How This Shaw Barrel Is Set Up
The barrel runs a rifle-length gas system, which fits the 18-inch length and gives you a softer, more consistent cycling impulse. The gas journal sits at a .750 inch diameter and comes dimpled, making gas block alignment painless. The muzzle is threaded 1/2-28, so your favorite brake, flash hider, or suppressor mount threads right on. The extension is cut with M4 feed ramps for smooth feeding.
One thing worth knowing going in: the 22 ARC uses a 6.5 Grendel Type II bolt with ARC headspace, and the bolt is not included with this barrel. You'll want to pair it with the correct bolt and Grendel-pattern magazines to finish the build. For anyone chasing a versatile long-range 22 on the AR platform, this Shaw barrel is a solid foundation with a name behind it that knows how to cut steel.
Key Specifications
- Manufacturer: Shaw Barrels
- Manufacturer Part Number: AR15HBSSHF182ARC
- UPC: 810140171566
- Caliber: 22 ARC (Advanced Rifle Cartridge)
- Barrel Length: 18 inches
- Twist Rate: 1:7
- Contour: HBAR
- Fluting: Spiral
- Material: 416R Stainless Steel
- Finish: Bead Blast Matte Stainless
- Muzzle Thread: 1/2-28
- Gas System Length: Rifle
- Gas Block Journal: .750 inch, dimpled
- Extension: M4 feed ramp cut
- Bolt / Headspace: 6.5 Grendel Type II / ARC (bolt not included)
- Weight: 2.20 lbs
What’s Included
- Shaw AR-15 22 ARC 18-inch spiral fluted barrel
Frequently Asked Questions
Does the Shaw 22 ARC barrel come with a bolt?
No, the bolt is not included with this barrel. The 22 ARC headspaces off a 6.5 Grendel Type II bolt with ARC headspace, so you'll need to add the correct bolt to complete your build. Pairing it with Grendel-pattern magazines will round out the setup.
What twist rate is this Shaw 22 ARC barrel and why does it matter?
It's a 1:7 twist, which is the standard for the 22 ARC. That faster twist is what lets it stabilize the long, heavy, high-BC bullets in the 62 to 80 grain range that give the cartridge its long-range edge. A slower twist would leave those heavier bullets unstable and hurt accuracy.
What gas system length does the 18-inch Shaw barrel use?
This barrel runs a rifle-length gas system, which suits the 18-inch length well. Rifle-length gas gives you a softer recoil impulse and smoother, more consistent cycling. The gas journal is .750 inch and comes dimpled to make gas block alignment easier.
What can I hunt or shoot with a 22 ARC AR-15?
The 22 ARC was built to deliver near .22-250 performance from the AR-15 platform, making it a strong choice for varmints, prairie dogs, and coyotes. With high-BC bullets it stays flat and bucks wind well out to 500 yards and further for target work. It's a versatile round for anyone wanting reach and precision from a standard AR.




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